feat: add Mux video component (#1036)

packages/html/src/define/media/mux-video.ts

@@ -0,0 +1,14 @@
+import { MuxVideo } from '../../media/mux-video';
+import { safeDefine } from '../safe-define';
+
+export class MuxVideoElement extends MuxVideo {
+  static readonly tagName = 'mux-video';
+}
+
+safeDefine(MuxVideoElement);
+
+declare global {
+  interface HTMLElementTagNameMap {
+    [MuxVideoElement.tagName]: MuxVideoElement;
+  }
+}