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/Math/Math.fround.js

@@ -0,0 +1,9 @@
+test("basic functionality", () => {
+    expect(Math.fround).toHaveLength(1);
+
+    expect(Math.fround(0)).toBe(0);
+    expect(Math.fround(1)).toBe(1);
+    expect(Math.fround(1.337)).toBeCloseTo(1.3370000123977661);
+    expect(Math.fround(1.5)).toBe(1.5);
+    expect(Math.fround(NaN)).toBe(NaN);
+});