Create github workflow to build apks on cloud

.github/workflows/main.yml

@@ -0,0 +1,54 @@
+# This is a basic workflow to help you get started with Actions
+
+name: Flutter Cloud Build
+
+# Controls when the workflow will run
+on:
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+    inputs:
+      version_name:
+        description: app version name
+        required: true
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+      - name: Setup Java
+        uses: actions/setup-java@v2
+        with:
+          java-version: '12'
+          distribution: 'adopt'
+      - name: Install Flutter Engine
+        uses: subosito/flutter-action@v1
+      - name: Get Pub Packages
+        run: flutter pub get
+      - name: Create releases directory
+        run: mkdir -p build/releases
+      - name: Build splited apks
+        run: |
+          flutter build apk --release --split-per-abi
+          cp build/app/outputs/apk/release/*.apk build/releases
+      - name: Build apk without splitting
+        run: |
+          flutter build apk --release
+          cp build/app/outputs/apk/release/*.apk build/releases
+      - name: Create app bundle
+        run: |
+          flutter build appbundle --release
+          cp build/app/outputs/bundle/release/*.aab build/releases
+      - name: Release app
+        uses: ncipollo/release-action@v1
+        with:
+          artifacts: 'build/releases/*.*'
+          name: ${{ github.event.inputs.version_name }}
+          tag: ${{ github.event.inputs.version_name }}
+          token: ${{ secrets.GITHUB_TOKEN }}