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/EventSource.idl

@@ -0,0 +1,27 @@
+#import <DOM/EventHandler.idl>
+#import <DOM/EventTarget.idl>
+
+// https://html.spec.whatwg.org/multipage/server-sent-events.html#eventsource
+[Exposed=(Window,Worker)]
+interface EventSource : EventTarget {
+    constructor(USVString url, optional EventSourceInit eventSourceInitDict = {});
+
+    readonly attribute USVString url;
+    readonly attribute boolean withCredentials;
+
+    // ready state
+    const unsigned short CONNECTING = 0;
+    const unsigned short OPEN = 1;
+    const unsigned short CLOSED = 2;
+    readonly attribute unsigned short readyState;
+
+    // networking
+    attribute EventHandler onopen;
+    attribute EventHandler onmessage;
+    attribute EventHandler onerror;
+    undefined close();
+};
+
+dictionary EventSourceInit {
+    boolean withCredentials = false;
+};