chore: 👷 add and update CI build system

.github/workflows/android.yml → .github/workflows/build/android.yml

@@ -1,15 +1,15 @@
 name: Android Build
 
 on:
-  push:
-    branches: [ master ]
   pull_request:
-    branches: [ master ]
+    branches: [main, android]
+    types: [opened, synchronize, closed]
+  push:
+    branches: [main, android]
 
 jobs:
   build:
     runs-on: ubuntu-latest
-    if: "contains(github.event.head_commit.message, 'android')"  # skips everything in this job if head commit message does not contain 'android'
 
     steps:
     - name: Enter to android folder

.github/workflows/build/backend.yml

@@ -0,0 +1,37 @@
+name: Build backend
+
+on:
+  pull_request:
+    branches: [main, backend]
+    types: [opened, synchronize, closed]
+  push:
+    branches: [main, backend]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 3
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          # cache: 'npm'
+      - name: Go to directory
+        run: cd ./backend
+
+      - name: Install Packages
+        run: npm install
+
+      - name: Test backend
+        run: npm run test --if-present
+
+      - name: Build
+        run: npm run build --if-present

.github/workflows/build/frontend.yml

@@ -0,0 +1,37 @@
+name: Frontend Build
+
+on:
+  pull_request:
+    branches: [main, frontend]
+    types: [opened, synchronize, closed]
+  push:
+    branches: [main, frontend]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 3
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          # cache: 'npm'
+      - name: Go to directory
+        run: cd ./frontend
+
+      - name: Install Packages
+        run: npm install
+
+      - name: Test backend
+        run: npm run test --if-present
+
+      - name: Build
+        run: npm run build --if-present

.github/workflows/release/android.yml

@@ -0,0 +1 @@
+# implement later

.github/workflows/release/backend.yml

@@ -0,0 +1 @@
+# implement later

.github/workflows/release/frontend.yml

@@ -0,0 +1 @@
+# implement later