docs(deployment): 添加 Netlify 部署配置和优化指南

- 新增 DEPLOYMENT.md 文件，详细说明 Netlify 部署配置和优化策略
- 更新 .netlifyignore 文件，排除非必要文件以提高部署效率
- 修改 netlify.toml 文件，启用资源压缩和缓存控制
- 添加部署分析脚本，生成部署清单和统计信息
- 优化 package.json，增加部署相关命令

package.json

@@ -15,7 +15,9 @@
     "deploy": "npm run build && netlify deploy --prod",
     "optimize-images": "node scripts/optimize-images.js",
     "compress": "node scripts/compress.js",
-    "security-check": "node scripts/security-check.js"
+    "security-check": "node scripts/security-check.js",
+    "deploy-prepare": "node scripts/deploy-prepare.js",
+    "deploy-analyze": "node scripts/deploy-prepare.js"
   },
   "keywords": [
     "esim",