feat: typescript part 1

Co-authored-by: Su-Yong <simssy2205@gmail.com>

reset.d.ts

@@ -0,0 +1,15 @@
+import '@total-typescript/ts-reset';
+import { YoutubePlayer } from './types/youtube-player';
+
+declare global {
+  interface DocumentEventMap {
+    'apiLoaded': CustomEvent<YoutubePlayer>;
+  }
+
+  interface Window {
+    /**
+     * YouTube Music internal variable (Last interaction time)
+     */
+    _lact: number;
+  }
+}