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/functions/function-nesting.js

@@ -0,0 +1,15 @@
+test("issue #6766, nested functions should not leak to global object", () => {
+    function foo() {
+        function bar() {
+            function baz() {
+                return 42;
+            }
+            return baz();
+        }
+        return bar();
+    }
+    expect(foo()).toBe(42);
+    expect(globalThis.foo).toBeUndefined();
+    expect(globalThis.bar).toBeUndefined();
+    expect(globalThis.baz).toBeUndefined();
+});