feat: 系统托盘 (#12)

* feat: 系统托盘

1. 添加系统托盘
2. 托盘添加切换供应商功能
3. 整理组件目录

* feat: 优化系统托盘菜单结构

- 扁平化Claude和Codex的菜单结构，直接将所有供应商添加到主菜单，简化用户交互。
- 添加无供应商时的提示信息，提升用户体验。
- 更新分隔符文本以增强可读性。

* feat: integrate Tailwind CSS and Lucide icons

- Added Tailwind CSS for styling and layout improvements.
- Integrated Lucide icons for enhanced UI elements.
- Updated project structure by removing unused CSS files and components.
- Refactored configuration files to support new styling and component structure.
- Introduced new components for managing providers with improved UI interactions.   

* fix: 修复类型声明和分隔符实现问题

- 修复 updateTrayMenu 返回类型不一致（Promise<void> -> Promise<boolean>）
- 添加缺失的 UnlistenFn 类型导入
- 使用 MenuBuilder.separator() 替代文本分隔符

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Co-authored-by: farion1231 <farion1231@gmail.c

src-tauri/Cargo.toml

@@ -21,7 +21,7 @@ tauri-build = { version = "2.4.0", features = [] }
 serde_json = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 log = "0.4"
-tauri = { version = "2.8.2", features = [] }
+tauri = { version = "2.8.2", features = ["tray-icon"] }
 tauri-plugin-log = "2"
 tauri-plugin-opener = "2"
 dirs = "5.0"