chore: implement otd commands, check if otd daemon is already running

src/lib/osuUtil.ts

@@ -149,3 +149,4 @@ export const getSkins = async (folder: string) =>
 export const startOpenTabletDriver = async (otdDaemonPath: string) =>
   await invoke('run_open_tablet_driver', { path: otdDaemonPath });
 export const stopOpenTabletDriver = async () => await invoke('stop_open_tablet_driver');
+export const isOpenTabletDriverRunning = async () => await invoke('is_open_tablet_driver_running');