youtube: Add alternative YT.Player constructor (#11844)

Add constructor from HTMLElement instead of id string.

youtube/youtube.d.ts

@@ -83,6 +83,7 @@ declare namespace YT {
     export class Player {
         // Constructor
         constructor(id: string, playerOptions: PlayerOptions);
+        constructor(element: HTMLElement, playerOptions: PlayerOptions);
 
         // Queueing functions
         loadVideoById(videoId: string, startSeconds?: number, suggestedQuality?: string): void;