feat(digital-guide): add data layer for rooms section

lib/features/digital_guide_view/tabs/rooms/data/models/digital_guide_room.dart

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+import "package:freezed_annotation/freezed_annotation.dart";
+
+part "digital_guide_room.freezed.dart";
+part "digital_guide_room.g.dart";
+
+@freezed
+class DigitalGuideRoom with _$DigitalGuideRoom {
+  const factory DigitalGuideRoom({
+    required int id,
+    required DigitalGuideTranslationsRoom translations,
+    @JsonKey(name: "images") required List<int>? imagesIds,
+  }) = _DigitalGuideRoom;
+
+  factory DigitalGuideRoom.fromJson(Map<String, dynamic> json) =>
+      _$DigitalGuideRoomFromJson(json);
+}
+
+@freezed
+class DigitalGuideTranslationsRoom with _$DigitalGuideTranslationsRoom {
+  const factory DigitalGuideTranslationsRoom({
+    required DigitalGuideTranslationRoom pl,
+  }) = _DigitalGuideTranslationsRoom;
+
+  factory DigitalGuideTranslationsRoom.fromJson(Map<String, dynamic> json) =>
+      _$DigitalGuideTranslationsRoomFromJson(json);
+}
+
+@freezed
+class DigitalGuideTranslationRoom with _$DigitalGuideTranslationRoom {
+  const factory DigitalGuideTranslationRoom({
+    @JsonKey(name: "name") required String name,
+    @JsonKey(name: "room_purpose") required String roomPurpose,
+    @JsonKey(name: "location") required String location,
+    @JsonKey(name: "working_days_and_hours")
+    required String workingDaysAndHours,
+    @JsonKey(name: "are_entrances_comment") required String areEntrancesComment,
+    @JsonKey(name: "is_one_level_floor_comment")
+    required String isOneLevelFloorComment,
+    @JsonKey(name: "are_places_for_wheelchairs_comment")
+    required String arePlacesForWheelchairsComment,
+    @JsonKey(name: "comment") required String comment,
+  }) = _DigitalGuideTranslationRoom;
+
+  factory DigitalGuideTranslationRoom.fromJson(Map<String, dynamic> json) =>
+      _$DigitalGuideTranslationRoomFromJson(json);
+}

lib/features/digital_guide_view/tabs/rooms/data/repository/rooms_repository.dart

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+import "package:fast_immutable_collections/fast_immutable_collections.dart";
+import "package:flutter_riverpod/flutter_riverpod.dart";
+import "package:riverpod_annotation/riverpod_annotation.dart";
+
+import "../../../../data/api/digital_guide_get_and_cache.dart";
+import "../../../../data/models/digital_guide_response.dart";
+import "../models/digital_guide_room.dart";
+
+part "rooms_repository.g.dart";
+
+@riverpod
+Future<IList<DigitalGuideRoom>> roomsRepository(
+  Ref ref,
+  DigitalGuideResponse building,
+) async {
+  final String endpoint = "rooms/?building=${building.id}";
+
+  return ref.getAndCacheDataFromDigitalGuide(
+    endpoint,
+    (List<dynamic> json) => json
+        .whereType<Map<String, dynamic>>()
+        .map(DigitalGuideRoom.fromJson)
+        .toIList(),
+    onRetry: () => ref.invalidateSelf(),
+  );
+}