feat: 添加unplugin-auto-import支持自动导入常用API

添加unplugin-auto-import插件配置，自动导入vue、vue-router等常用API
更新tsconfig.json包含auto-imports.d.ts类型声明文件
修改文档说明开发时注意事项

tsconfig.json

@@ -19,7 +19,7 @@
     },
     "lib": ["esnext", "dom"]
   },
-  "include": ["src/*.ts", "src/*.d.ts", "src/renderer"],
+  "include": ["src/*.ts", "src/*.d.ts", "src/renderer", "src/renderer/auto-imports.d.ts"],
   "references": [
     {
       "path": "./tsconfig.node.json"