feat: show current running models

src/lib/stores/index.ts

@@ -16,6 +16,7 @@ export const mobile = writable(false);
 
 export const socket: Writable<null | Socket> = writable(null);
 export const activeUserCount: Writable<null | number> = writable(null);
+export const USAGE_POOL: Writable<null | string[]> = writable(null);
 
 export const theme = writable('system');
 export const chatId = writable('');