[enhancement]: Support disabling MPV entirely

Supports running Feishin solely using web audio (useful for clients with problems with MPV).
Also moves save/restore queue to utils, as MPV object is now optional

src/main/preload/utils.ts

@@ -1,9 +1,31 @@
+import { IpcRendererEvent, ipcRenderer } from 'electron';
 import { isMacOS, isWindows, isLinux } from '../utils';
+import { PlayerState } from '/@/renderer/store';
+
+const saveQueue = (data: Record<string, any>) => {
+    ipcRenderer.send('player-save-queue', data);
+};
+
+const restoreQueue = () => {
+    ipcRenderer.send('player-restore-queue');
+};
+
+const onSaveQueue = (cb: (event: IpcRendererEvent) => void) => {
+    ipcRenderer.on('renderer-save-queue', cb);
+};
+
+const onRestoreQueue = (cb: (event: IpcRendererEvent, data: Partial<PlayerState>) => void) => {
+    ipcRenderer.on('renderer-restore-queue', cb);
+};
 
 export const utils = {
     isLinux,
     isMacOS,
     isWindows,
+    onRestoreQueue,
+    onSaveQueue,
+    restoreQueue,
+    saveQueue,
 };
 
 export type Utils = typeof utils;