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/variable-undefined.js

@@ -0,0 +1,14 @@
+test("basic functionality", () => {
+    function foo(a) {
+        return a;
+    }
+
+    var x = undefined;
+    expect(x).toBeUndefined();
+    expect(foo(x)).toBeUndefined();
+
+    var o = {};
+    o.x = x;
+    expect(o.x).toBeUndefined();
+    expect(o.x).toBe(x);
+});