feat: add common config snippet management system

- Add settings module for managing common configuration snippets
- Implement UI for creating, editing, and deleting snippets
- Add tauri-plugin-fs for file operations
- Replace co-authored setting with flexible snippet system
- Enable users to define custom config snippets for frequently used settings

package.json

@@ -32,6 +32,7 @@
     "@codemirror/view": "^6.38.2",
     "@tailwindcss/vite": "^4.1.13",
     "@tauri-apps/api": "^2.8.0",
+    "@tauri-apps/plugin-dialog": "^2.4.0",
     "@tauri-apps/plugin-process": "^2.0.0",
     "@tauri-apps/plugin-updater": "^2.0.0",
     "codemirror": "^6.0.2",