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/NavigatorBeacon.idl

@@ -0,0 +1,7 @@
+#import <Fetch/BodyInit.idl>
+
+// https://w3c.github.io/beacon/#sendbeacon-method
+// FIXME: This is a partial interface not an interface mixin
+interface mixin NavigatorBeacon {
+    boolean sendBeacon(USVString url, optional BodyInit? data = null);
+};