LibJS: Implement rawJSON and isRawJSON functions

Author: https://github.com/aplefull
Commit: 223c9c91e6
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4451
Reviewed-by: https://github.com/trflynn89 ✅

Libraries/LibJS/Runtime/RawJSONObject.cpp

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2025, Artsiom Yafremau <aplefull@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/RawJSONObject.h>
+
+namespace JS {
+
+GC_DEFINE_ALLOCATOR(RawJSONObject);
+
+GC::Ref<RawJSONObject> RawJSONObject::create(Realm& realm, Object* prototype)
+{
+    if (!prototype)
+        return realm.create<RawJSONObject>(realm.intrinsics().empty_object_shape());
+
+    return realm.create<RawJSONObject>(ConstructWithPrototypeTag::Tag, *prototype);
+}
+
+}