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/postfix-increment-eval-order.js

@@ -0,0 +1,13 @@
+test("postfix increment evaluation order", () => {
+    function bar(a, b) {
+        expect(a).toBe(0);
+        expect(b).toBe(0);
+    }
+
+    function foo() {
+        let i = 0;
+        bar(i, i++);
+        expect(i).toBe(1);
+    }
+    foo();
+});