feat: Add GitHub Actions workflows for building and releasing Android, iOS, Linux, and Windows applications

.github/workflows/android-build.yml

@@ -0,0 +1,69 @@
+# .github/workflows/release_apk_github.yml
+name: Build Android Release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    name: Build Android Release for GitHub
+    runs-on: ubuntu-latest
+    if: github.repository_owner == 'vleeuwenmenno' && contains(github.server_url, 'github.com')
+    permissions:
+      contents: write
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: "temurin"
+          java-version: "17"
+
+      - name: Set up Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v3
+
+      - name: Build release APK
+        run: flutter build apk --release
+
+      - name: Extract version
+        id: version
+        run: |
+          APP_VERSION=$(grep 'version:' pubspec.yaml | sed 's/version: //g' | sed 's/+.*//g')
+          echo "APP_VERSION=$APP_VERSION" >> $GITHUB_ENV
+
+      - name: Rename APK
+        run: |
+          mv build/app/outputs/flutter-apk/app-release.apk supplements_${{ env.APP_VERSION }}_android.apk
+
+      - name: Build debug APK
+        run: flutter build apk --debug
+
+      - name: Rename Debug APK
+        run: |
+          mv build/app/outputs/flutter-apk/app-debug.apk supplements_${{ env.APP_VERSION }}_debug.apk
+
+      - name: Debug release information
+        run: |
+          echo "Release tag: ${{ github.event.release.tag_name }}"
+          echo "Release name: ${{ github.event.release.name }}"
+          echo "Release URL: ${{ github.event.release.html_url }}"
+          echo "App version: ${{ env.APP_VERSION }}"
+
+      - name: Upload APKs to GitHub Release
+        run: |
+          gh release upload "${{ github.event.release.tag_name }}" "supplements_${{ env.APP_VERSION }}_android.apk" --clobber
+          gh release upload "${{ github.event.release.tag_name }}" "supplements_${{ env.APP_VERSION }}_debug.apk" --clobber
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}