Add mirror management and selection UI

Introduces backend API and router for mirror management, including latency testing and custom mirror setting. Adds frontend components and controllers for mirror selection, speed testing, and integration into system info and plugin store pages, allowing users to select and test download/list mirrors interactively.

packages/napcat-webui-backend/src/router/index.ts

@@ -18,6 +18,7 @@ import { UpdateNapCatRouter } from './UpdateNapCat';
 import DebugRouter from '@/napcat-webui-backend/src/api/Debug';
 import { ProcessRouter } from './Process';
 import { PluginRouter } from './Plugin';
+import { MirrorRouter } from './Mirror';
 
 const router: Router = Router();
 
@@ -50,5 +51,7 @@ router.use('/Debug', DebugRouter);
 router.use('/Process', ProcessRouter);
 // router:插件管理相关路由
 router.use('/Plugin', PluginRouter);
+// router:镜像管理相关路由
+router.use('/Mirror', MirrorRouter);
 
 export { router as ALLRouter };