ci: Formatting checks

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  format:
+    name: Format ${{ matrix.package }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - package: core
+            package_path: packages/drift_sync_core
+          - package: flutter
+            package_path: packages/drift_sync_flutter
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          flutter-version: 3.38.9
+          channel: stable
+          cache: true
+
+      - name: Resolve dependencies
+        working-directory: ${{ matrix.package_path }}
+        run: flutter pub get
+
+      - name: Check formatting
+        run: dart format --output=none --set-exit-if-changed "${{ matrix.package_path }}"