ci: create test and build script

.github/FUNDING.yml

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+# These are supported funding model platforms
+
+github: phanatagama # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+ko_fi: phanatagama # Replace with a single Ko-fi username

.github/workflows/build.yml

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+name: Builds
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+# Declare default permissions as read only.
+permissions: read-all
+
+jobs:
+  build:
+    name: Build ${{ matrix.target }}
+    runs-on: macos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        target: ["apk --debug", "appbundle --debug", "ios --no-codesign", macos]
+    steps:
+      - name: Set up JDK 11
+        uses: actions/setup-java@cd89f46ac9d01407894225f350157564c9c7cee2 # v3.12.0
+        with:
+          java-version: 11
+          distribution: temurin
+      # Set up Flutter.
+      - name: Clone Flutter repository with master channel
+        uses: subosito/flutter-action@48cafc24713cca54bbe03cdc3a423187d413aafa
+        with:
+          channel: master
+      - run: flutter doctor -v
+
+      # Checkout gallery code and get packages.
+      - name: Checkout gallery code
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - run: flutter pub get
+
+      - run: flutter build ${{ matrix.target }}
+
+      # Upload generated apk to the artifacts.
+      - uses: actions/upload-artifact@v2
+        with:
+          name: debug-apk
+          path: build/app/outputs/apk/debug/app-debug.apk

.github/workflows/test.yml

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+name: Tests
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+# Declare default permissions as read only.
+permissions: read-all
+
+jobs:
+  unit-test:
+    name: Unit tests on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    steps:
+      # Set up Flutter.
+      - name: Clone Flutter repository with master channel
+        uses: subosito/flutter-action@48cafc24713cca54bbe03cdc3a423187d413aafa
+        with:
+          channel: master
+      - run: flutter doctor -v
+
+      # Checkout gallery code and get packages.
+      - name: Checkout gallery code
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - run: flutter pub get
+
+      # Analyze, check formatting, and run unit tests.
+      - run: flutter analyze
+      - name: Ensure the Dart code is formatted correctly
+        run: dart format --set-exit-if-changed .
+      - name: Run Flutter unit tests
+        run: flutter test --coverage
+
+        # Upload coverage to codecov
+      - name: Upload coverage to codecov
+        uses: codecov/codecov-action@v2.1.0
+        with:
+          token: ${{secrets.CODECOV_TOKEN}}
+          file: ./coverage/lcov.info
+
+  benchmark-test:
+    name: Benchmark tests
+    runs-on: ubuntu-latest
+    steps:
+      # Set up Flutter.
+      - name: Clone Flutter repository with master channel
+        uses: subosito/flutter-action@48cafc24713cca54bbe03cdc3a423187d413aafa
+        with:
+          channel: master
+      - run: flutter doctor -v
+
+      # Checkout gallery code and get packages.
+      - name: Checkout gallery code
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - run: flutter pub get
+
+      - run: flutter test test_benchmarks
+
+  golden-test:
+    name: Golden tests
+    runs-on: macos-latest
+    steps:
+      # Set up Flutter.
+      - name: Clone Flutter repository with master channel
+        uses: subosito/flutter-action@48cafc24713cca54bbe03cdc3a423187d413aafa
+        with:
+          channel: master
+      - run: flutter doctor -v
+
+      # Checkout gallery code and get packages.
+      - name: Checkout gallery code
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - run: flutter pub get
+
+      # Run the golden tests and upload failed test artifacts.
+      - run: flutter test test_goldens
+      - name: Upload goldens if tests fail
+        uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce
+        if: failure()
+        with:
+          name: goldens
+          path: test_goldens/failures/