ci: 添加 GitHub Actions 部署工作流

添加用于构建和部署到 gh-pages 的 CI 工作流配置，在 main 分支推送时自动触发

.github/workflows/deploy.yml

@@ -0,0 +1,25 @@
+name: Build and Deploy
+on:
+  push:
+    branches:
+      - main
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Dependencies
+        run: npm install
+
+      - name: Build
+        run: npm run build
+
+      - name: Deploy to page branch
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./dist
+          publish_branch: page
+          cname: ${{ secrets.CNAME }}