Added CI workflow

.github/workflows/test.yaml

@@ -0,0 +1,53 @@
+name: Dart CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+env:
+  FLUTTER_VERSION: 3
+
+jobs:
+  ci:
+    name: Continuous integration
+    runs-on: ubuntu-latest
+    steps:
+      # Setup
+      - uses: actions/checkout@v3
+      - name: Setup Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+
+      # Install dependencies
+      - name: isar-crdt install dependencies
+        run: dart pub get
+        working-directory: packages/isar-crdt
+      - name: isar-crdt-generator install dependencies
+        run: dart pub get
+        working-directory: packages/isar-crdt-generator
+      - name: isar-crdt-test install dependencies
+        run: dart pub get
+        working-directory: packages/isar-crdt-test
+
+      # Formatting
+      - name: Check formatting
+        run: dart format -o none --set-exit-if-changed  .
+
+      # Linting
+      - name: Linting
+        run: dart analyze --fatal-warnings
+
+      # Testing
+      - name: Test isar-crdt package
+        working-directory: packages/isar-crdt
+        run: dart test
+      - name: E2E tests
+        working-directory: packages/isar-crdt-test
+        run: |
+          dart run build_runner build
+          dart test