feat: Add Release PlayStore CD

.github/workflows/playstore.yaml

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+name: PlayStore release
+
+on:
+  push:
+    branches:
+      - playstore-cd
+
+jobs:
+  playstore:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v3
+
+      - name: Setup ruby
+        uses: actions/setup-ruby@v1
+        with:
+          ruby-version: "3.x"
+
+      - name: Setup fastlane
+        run: |
+          cd android
+          bundle install
+          cd ..
+
+      - name: Restore json key # make sure that you restore the key in the correct directory (ref. fastlane/Appfile)
+        run: |
+          cd android/fastlane
+          echo "${{ secrets.GOOGLE_API_PUB_JSON }}" | base64 --decode > service-account.json
+          cd ../..
+
+      - name: Restore keystore # make sure that you restore the key in the correct directory (same as app/gradle.properties)
+        run: |
+          cd android/app
+          echo "${{ secrets.SIGN_KEY }}" > myKeystore.keystore.asc
+          gpg -d --passphrase ${{ secrets.SIGN_PASSWORD }} --batch myKeystore.keystore.asc > myKeystore.keystore
+          cd ../..
+
+      - name: Set up environment
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'zulu'
+
+      - name: Gradle cache
+        uses: gradle/actions/setup-gradle@v3
+
+      - name: Upload app to Play Store (Internal track)
+        run: |
+          cd android
+          bundle exec fastlane internal

Gemfile

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+source "https://rubygems.org"
+
+gem "fastlane"

fastlane/Appfile

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+json_key_file("fastlane/service-account.json") # Path to the json secret file - Follow https://docs.fastlane.tools/actions/supply/#setup to get one
+package_name("com.enioka.scanner.demo") # e.g. com.krausefx.app

fastlane/Fastfile

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+# This file contains the fastlane.tools configuration
+# You can find the documentation at https://docs.fastlane.tools
+#
+# For a list of all available actions, check out
+#
+#     https://docs.fastlane.tools/actions
+#
+# For a list of all available plugins, check out
+#
+#     https://docs.fastlane.tools/plugins/available-plugins
+#
+
+# Uncomment the line if you want fastlane to automatically update itself
+# update_fastlane
+
+default_platform(:android)
+
+platform :android do
+
+    # LANE 1
+    desc "Publish a new version to the Google Play (INTERNAL)"
+    lane :internal do
+
+        # Generate AAB file
+        gradle(
+        task: "bundle",
+        build_type: "Release"
+        )
+
+        # Upload the AAB to play store (internal track)
+        upload_to_play_store(track: 'internal', validate_only: true)
+    end
+end