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/LibJS/Tests/builtins/JSON/JSON.parse-reviver.js

@@ -0,0 +1,11 @@
+test("basic functionality", () => {
+    let string = `{"var1":10,"var2":"hello","var3":{"nested":5}}`;
+
+    let object = JSON.parse(string, (key, value) =>
+        typeof value === "number" ? value * 2 : value
+    );
+    expect(object).toEqual({ var1: 20, var2: "hello", var3: { nested: 10 } });
+
+    object = JSON.parse(string, (key, value) => (typeof value === "number" ? undefined : value));
+    expect(object).toEqual({ var2: "hello", var3: {} });
+});