Bug 1902115 - Update VideoFrameCopyToOptions webidl r=webidl,media-playback-reviewers,smaug,padenot

This patch updates the `VideoFrameCopyToOptions` webidl to meet the
changes in WebCodecs PR 754 [1].

[1] https://github.com/w3c/webcodecs/pull/754

Differential Revision: https://phabricator.services.mozilla.com/D213805

dom/webidl/VideoFrame.webidl

@@ -107,6 +107,8 @@ dictionary VideoFrameBufferInit {
 dictionary VideoFrameCopyToOptions {
   DOMRectInit rect;
   sequence<PlaneLayout> layout;
+  VideoPixelFormat format;
+  PredefinedColorSpace colorSpace;
 };
 
 dictionary PlaneLayout {