diff --git a/pubspec.lock b/pubspec.lock
index 49a0ce6..33592e1 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,6 +1,27 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "18.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   async:
     dependency: transitive
     description:
@@ -15,6 +36,62 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  build:
+    dependency: transitive
+    description:
+      name: build
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.6.3"
+  build_config:
+    dependency: transitive
+    description:
+      name: build_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.6"
+  build_daemon:
+    dependency: transitive
+    description:
+      name: build_daemon
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.10"
+  build_resolvers:
+    dependency: transitive
+    description:
+      name: build_resolvers
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.4"
+  build_runner:
+    dependency: "direct dev"
+    description:
+      name: build_runner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.11.5"
+  build_runner_core:
+    dependency: transitive
+    description:
+      name: build_runner_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.10"
+  built_collection:
+    dependency: transitive
+    description:
+      name: built_collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.0.0"
+  built_value:
+    dependency: transitive
+    description:
+      name: built_value
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "8.0.3"
   characters:
     dependency: transitive
     description:
@@ -29,6 +106,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.0"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.4"
+  cli_util:
+    dependency: transitive
+    description:
+      name: cli_util
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   clock:
     dependency: transitive
     description:
@@ -36,6 +127,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
+  code_builder:
+    dependency: transitive
+    description:
+      name: code_builder
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.7.0"
   collection:
     dependency: transitive
     description:
@@ -43,6 +141,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.15.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.14"
   fake_async:
     dependency: transitive
     description:
@@ -50,6 +169,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.0"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.0"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -60,6 +193,76 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  freezed:
+    dependency: "direct dev"
+    description:
+      name: freezed
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.14.1"
+  freezed_annotation:
+    dependency: "direct main"
+    description:
+      name: freezed_annotation
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.14.1"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  graphs:
+    dependency: transitive
+    description:
+      name: graphs
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.0"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.0"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.5"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.6.3"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   matcher:
     dependency: transitive
     description:
@@ -74,6 +277,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  nested:
+    dependency: transitive
+    description:
+      name: nested
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   path:
     dependency: transitive
     description:
@@ -81,11 +305,67 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0"
+  pedantic:
+    dependency: transitive
+    description:
+      name: pedantic
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.11.0"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.0"
+  provider:
+    dependency: "direct main"
+    description:
+      name: provider
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.0.0"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  pubspec_parse:
+    dependency: transitive
+    description:
+      name: pubspec_parse
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.8"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.4+1"
   sky_engine:
     dependency: transitive
     description: flutter
     source: sdk
     version: "0.0.99"
+  source_gen:
+    dependency: transitive
+    description:
+      name: source_gen
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.9.10+3"
   source_span:
     dependency: transitive
     description:
@@ -107,6 +387,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   string_scanner:
     dependency: transitive
     description:
@@ -128,6 +415,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.2.19"
+  timing:
+    dependency: transitive
+    description:
+      name: timing
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.1+3"
   typed_data:
     dependency: transitive
     description:
@@ -142,5 +436,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.0"
 sdks:
   dart: ">=2.12.0 <3.0.0"
+  flutter: ">=1.16.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 613421d..d93d83a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -7,10 +7,14 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
+  freezed_annotation: ^0.14.1
+  provider: ^5.0.0
 
 dev_dependencies:
+  build_runner: ^1.11.5
   flutter_test:
     sdk: flutter
+  freezed: ^0.14.1
 
 flutter:
   uses-material-design: true