CI: Add main and pullrequest workflows

.github/workflows/main_deploy.yaml

@@ -0,0 +1,29 @@
+name: Main Deploy Workflow
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build_web:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: ${{ env.JAVA_VERSION }}
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+      - run: flutter pub get
+      - name: Prepare web
+        run: ./scripts/prepare-web.sh
+      - name: Build Release Web
+        run: flutter build web --release --verbose --source-maps
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          personal_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./build/web
+          publish_branch: gh-pages

.github/workflows/pull_request.yaml

@@ -1,6 +1,6 @@
-name: Flutter Analyze
+name: Pull Request Workflow
 
-on: [push, pull_request]
+on: [pull_request]
 
 env:
   FLUTTER_VERSION: '3.10.6'