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/modules/function-in-function.mjs

@@ -0,0 +1,11 @@
+function foo() {
+    function bar() {}
+    bar.baz = "value on bar";
+
+    return bar;
+}
+
+foo.bippity = "boppity";
+const fooResult = foo();
+
+export const passed = fooResult.baz === "value on bar" && foo.bippity === "boppity";