LibWeb: Implement Resource Timing

Author: https://github.com/Lubrsi
Commit: 6d1f78198d
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3704
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibWeb/ResourceTiming/PerformanceResourceTiming.idl

@@ -0,0 +1,36 @@
+#import <PerformanceTimeline/PerformanceEntry.idl>
+
+// https://w3c.github.io/resource-timing/#dom-renderblockingstatustype
+enum RenderBlockingStatusType {
+    "blocking",
+    "non-blocking"
+};
+
+// https://w3c.github.io/resource-timing/#dom-performanceresourcetiming
+[Exposed=(Window,Worker)]
+interface PerformanceResourceTiming : PerformanceEntry {
+    readonly attribute DOMString initiatorType;
+    readonly attribute DOMString deliveryType;
+    readonly attribute ByteString nextHopProtocol;
+    readonly attribute DOMHighResTimeStamp workerStart;
+    readonly attribute DOMHighResTimeStamp redirectStart;
+    readonly attribute DOMHighResTimeStamp redirectEnd;
+    readonly attribute DOMHighResTimeStamp fetchStart;
+    readonly attribute DOMHighResTimeStamp domainLookupStart;
+    readonly attribute DOMHighResTimeStamp domainLookupEnd;
+    readonly attribute DOMHighResTimeStamp connectStart;
+    readonly attribute DOMHighResTimeStamp connectEnd;
+    readonly attribute DOMHighResTimeStamp secureConnectionStart;
+    readonly attribute DOMHighResTimeStamp requestStart;
+    readonly attribute DOMHighResTimeStamp finalResponseHeadersStart;
+    readonly attribute DOMHighResTimeStamp firstInterimResponseStart;
+    readonly attribute DOMHighResTimeStamp responseStart;
+    readonly attribute DOMHighResTimeStamp responseEnd;
+    readonly attribute unsigned long long  transferSize;
+    readonly attribute unsigned long long  encodedBodySize;
+    readonly attribute unsigned long long  decodedBodySize;
+    readonly attribute unsigned short responseStatus;
+    readonly attribute RenderBlockingStatusType renderBlockingStatus;
+    readonly attribute DOMString contentType;
+    [Default] object toJSON();
+};