feat: 添加 npm 依赖安装与缓存的 GitHub Action，支持多种包管理器，优化 CI/CD 流程，提供详细的缓存状态和安装总结。

npm-install/examples/pnpm-monorepo.yml

@@ -0,0 +1,52 @@
+# pnpm monorepo项目示例
+name: pnpm Monorepo CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  install-and-test:
+    runs-on: ubuntu-latest
+    
+    strategy:
+      matrix:
+        node-version: [16, 18, 20]
+    
+    steps:
+      - name: 检出代码
+        uses: actions/checkout@v4
+
+      - name: 设置pnpm
+        uses: pnpm/action-setup@v2
+        with:
+          version: 8
+
+      - name: 设置Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'pnpm'
+
+      - name: 安装依赖
+        id: install-deps
+        uses: actions/xgj/npm-install@v1
+        with:
+          package-manager: 'pnpm'
+          cache-prefix: 'monorepo'
+
+      - name: 显示缓存状态
+        run: |
+          echo "缓存命中: ${{ steps.install-deps.outputs.cache-hit }}"
+          echo "缓存Key: ${{ steps.install-deps.outputs.cache-key }}"
+
+      - name: 运行所有包的测试
+        run: pnpm run test --recursive
+
+      - name: 构建所有包
+        run: pnpm run build --recursive
+
+      - name: 类型检查
+        run: pnpm run type-check --recursive