Add build workflow

.github/workflows/android-build.yml

@@ -0,0 +1,76 @@
+name: Android Build
+
+# 1
+on:
+  # 2
+  push:
+    branches: 
+      - "*"
+  pull_request:
+    branches:
+      - "*"
+  # 3
+  workflow_dispatch:
+
+# 4
+jobs:
+  # 5
+  build:
+    # 6
+    runs-on: ubuntu-latest
+    permissions: write-all
+
+    # 7
+    steps:
+      # 8
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      # 9
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: "17"
+          cache: 'gradle'
+      # 10   
+      - uses: subosito/flutter-action@v2
+        with:
+          # 11
+          flutter-version: "3.16.3"
+          channel: 'stable'
+          cache: true
+
+      - name: Create key.properties
+        run: |
+          echo keyPassword=\${{ secrets.KEY_PASSWORD }} > ./android/key.properties
+          echo storePassword=\${{ secrets.KEY_STORE_PASSWORD }} >> ./android/key.properties
+          echo keyAlias=\${{ secrets.KEY_ALIAS }} >> ./android/key.properties
+
+      - name: Load key
+        run: echo "${{ secrets.KEYSTORE_JKS_RELEASE }}" | base64 --decode > android/app/release-key.jks
+
+      - name: Turn off analytics
+        run: flutter config --no-analytics
+
+      - name: Pub Get Packages
+        run: flutter pub get
+
+      - name: Build arm APK
+        run: flutter build apk --release --split-per-abi --target-platform="android-arm"
+
+      - name: Build arm64 APK
+        run: flutter build apk --release --split-per-abi --target-platform="android-arm64"
+
+      - name: Build x64 APK
+        run: flutter build apk --release --split-per-abi --target-platform="android-x64"
+
+      - name: Save APKs to Artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: APKs
+          path: build/app/outputs/flutter-apk/*.apk
+
+
+
+
+