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/MessagePort.idl

@@ -0,0 +1,19 @@
+#import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
+
+// https://html.spec.whatwg.org/multipage/web-messaging.html#messageport
+[Exposed=(Window,Worker,AudioWorklet), Transferable]
+interface MessagePort : EventTarget {
+    undefined postMessage(any message, sequence<object> transfer);
+    undefined postMessage(any message, optional StructuredSerializeOptions options = {});
+    undefined start();
+    undefined close();
+
+    // event handlers
+    attribute EventHandler onmessage;
+    attribute EventHandler onmessageerror;
+};
+
+dictionary StructuredSerializeOptions {
+    sequence<object> transfer = [];
+};