refactor: 重构 GUI 框架为 Wails

- 添加 Go 后端实现，包括配置管理、文件上传逻辑和 Wails 应用接口
- 实现前端 Vue 界面，提供服务器配置、目录选择、上传控制等功能
- 集成 Element Plus 组件库构建用户界面
- 添加文件上传进度显示和实时日志输出功能
- 实现后台文件监控和上传任务管理
- 配置 Wails 框架支持前后端交互
- 更新项目依赖，移除 Fyne 框架，集成 Wails v2
- 添加项目配置文件管理和自动保存功能

frontend/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "frontend",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "run-p type-check \"build-only {@}\" --",
+    "preview": "vite preview",
+    "build-only": "vite build",
+    "type-check": "vue-tsc --build"
+  },
+  "dependencies": {
+    "element-plus": "^2.13.7",
+    "vue": "^3.5.32"
+  },
+  "devDependencies": {
+    "@tsconfig/node24": "^24.0.4",
+    "@types/node": "^24.12.2",
+    "@vitejs/plugin-vue": "^6.0.6",
+    "@vue/tsconfig": "^0.9.1",
+    "npm-run-all2": "^8.0.4",
+    "typescript": "~6.0.0",
+    "vite": "^8.0.8",
+    "vite-plugin-vue-devtools": "^8.1.1",
+    "vue-tsc": "^3.2.6"
+  },
+  "engines": {
+    "node": "^20.19.0 || >=22.12.0"
+  }
+}