canvas: Add initial support of ImageBitmapRenderingContext (#37998)

Add support of the ImageBitmapRenderingContext as "bitmaprenderer"
canvas context mode to RenderingContext/OffscreenRenderingContext
https://html.spec.whatwg.org/multipage/#imagebitmaprenderingcontext

It is initial implementation with public interface API but without
any display presentation support for HTMLCanvasElement.

Testing: Improvements in the following tests:
-
html/canvas/element/manual/imagebitmap/createImageBitmap-origin.sub.html
- html/canvas/offscreen/manual/text/canvas.2d.offscreen*
-
html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.nocrash.html
- imagebitmap-renderingcontext/*

Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>

components/script_bindings/webidls/ImageBitmapRenderingContext.webidl

@@ -0,0 +1,14 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+/// <https://html.spec.whatwg.org/multipage/#imagebitmaprenderingcontext>
+[Exposed=(Window,Worker)]
+interface ImageBitmapRenderingContext {
+  readonly attribute (HTMLCanvasElement or OffscreenCanvas) canvas;
+  [Throws] undefined transferFromImageBitmap(ImageBitmap? bitmap);
+};
+
+dictionary ImageBitmapRenderingContextSettings {
+  boolean alpha = true;
+};