chore: 清理旧文件并重构项目基础结构

- 删除大量废弃的旧代码、依赖和配置文件
- 新增基础项目配置、工具函数、页面模板和请求库
- 重构目录结构，统一项目规范
- 添加commitlint、husky等代码规范工具

.vscode/extensions.json

@@ -0,0 +1,15 @@
+{
+  "recommendations": [
+    "vue.volar",
+    "dbaeumer.vscode-eslint",
+    "antfu.unocss",
+    "antfu.iconify",
+    "evils.uniapp-vscode",
+    "uni-helper.uni-helper-vscode",
+    "uni-helper.uni-app-schemas-vscode",
+    "uni-helper.uni-highlight-vscode",
+    "uni-helper.uni-ui-snippets-vscode",
+    "uni-helper.uni-app-snippets-vscode",
+    "streetsidesoftware.code-spell-checker"
+  ]
+}