Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/HTML/PromiseRejectionEvent.idl

@@ -0,0 +1,15 @@
+#import <DOM/Event.idl>
+
+// https://html.spec.whatwg.org/multipage/webappapis.html#promiserejectionevent
+[Exposed=*]
+interface PromiseRejectionEvent : Event {
+    constructor(DOMString type, PromiseRejectionEventInit eventInitDict);
+
+    readonly attribute object promise;
+    readonly attribute any reason;
+};
+
+dictionary PromiseRejectionEventInit : EventInit {
+    required object promise;
+    any reason;
+};