LibWeb/HTML: Implement TextTrackCue idl interface

Author: https://github.com/jamierocks
Commit: 0b2449d8d2
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1494
Reviewed-by: https://github.com/AtkinsSJ
Reviewed-by: https://github.com/tcl3 ✅

Userland/Libraries/LibWeb/HTML/TextTrackCue.idl

@@ -0,0 +1,15 @@
+#import <DOM/EventTarget.idl>
+
+// https://html.spec.whatwg.org/multipage/media.html#texttrackcue
+[Exposed=Window]
+interface TextTrackCue : EventTarget {
+    readonly attribute TextTrack? track;
+
+    attribute DOMString id;
+    attribute double startTime;
+    attribute unrestricted double endTime;
+    attribute boolean pauseOnExit;
+
+    attribute EventHandler onenter;
+    attribute EventHandler onexit;
+};