add GitHub Actions workflows for Dart Analyzer and

PubDev Score calculation

.github/workflows/analyze_project.yaml

@@ -0,0 +1,29 @@
+name: Dart Analyzer
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v1
+      with:
+        java-version: '12.x'
+
+    - name: Install Flutter
+      uses: subosito/flutter-action@v1
+      with:
+        flutter-version: '2.x'
+
+    - name: Get dependencies
+      run: flutter pub get
+
+    - name: Analyze
+      run: flutter analyze