Upload debug apk (#187)

This adds steps to our android debug smoke build to upload a debug apk on merges to main, retained for 60 days. This can be used to help test and troubleshoot builds in between Android releases.

.github/workflows/smoke.yml

@@ -42,6 +42,44 @@ jobs:
       - name: Build Android debug
         run: flutter build appbundle --debug
 
+      - name: Setup bundletool
+        if: github.ref == 'refs/heads/main'
+        uses: amyu/setup-bundletool@f7a6fdd8e04bb23d2fdf3c2f60c9257a6298a40a
+      - name: Install the google play key material
+        if: github.ref == 'refs/heads/main'
+        env:
+          GOOGLE_PLAY_API_JWT_BASE64: ${{ secrets.GOOGLE_PLAY_API_JWT_BASE64 }}
+          GOOGLE_PLAY_KEYSTORE_BASE64: ${{ secrets.GOOGLE_PLAY_KEYSTORE_BASE64 }}
+        run: |
+          GOOGLE_PLAY_API_JWT_PATH="$RUNNER_TEMP/gp_api.json"
+          echo "GOOGLE_PLAY_API_JWT_PATH=$GOOGLE_PLAY_API_JWT_PATH" >> $GITHUB_ENV
+          echo -n "$GOOGLE_PLAY_API_JWT_BASE64" | base64 --decode --output "$GOOGLE_PLAY_API_JWT_PATH"
+
+          GOOGLE_PLAY_KEYSTORE_PATH="$RUNNER_TEMP/gp_signing.jks"
+          echo "GOOGLE_PLAY_KEYSTORE_PATH=$GOOGLE_PLAY_KEYSTORE_PATH" >> $GITHUB_ENV
+          echo -n "$GOOGLE_PLAY_KEYSTORE_BASE64" | base64 --decode --output "$GOOGLE_PLAY_KEYSTORE_PATH"
+      - name: Generate debug apk
+        if: github.ref == 'refs/heads/main'
+        env:
+          TOKEN: ${{ secrets.MACHINE_USER_PAT }}
+          GOOGLE_PLAY_KEYSTORE_PASSWORD: ${{ secrets.GOOGLE_PLAY_KEYSTORE_PASSWORD }}
+        run: |
+          bundletool build-apks \
+            --bundle=build/app/outputs/bundle/debug/app-debug.aab \
+            --output=build/app/outputs/apk/debug/app-debug.apks \
+            --mode=universal \
+            --ks=$GOOGLE_PLAY_KEYSTORE_PATH \
+            --ks-key-alias=key \
+            --ks-pass=pass:$GOOGLE_PLAY_KEYSTORE_PASSWORD
+          unzip -p build/app/outputs/apk/debug/app-debug.apks universal.apk > build/app/outputs/apk/debug/app-debug.apk
+      - name: Collect debug apk
+        if: github.ref == 'refs/heads/main'
+        uses: actions/upload-artifact@v3
+        with:
+          name: app-debug.apk
+          path: build/app/outputs/apk/debug/app-debug.apk
+          retention-days: 60
+
   build-ios:
     name: iOS
     runs-on: macos-latest