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/math/integer-overflow-basic.js

@@ -0,0 +1,10 @@
+test("basic integer overflow correctness", () => {
+    expect(2147483647 + 1).toBe(2147483648);
+    expect(2147483648 - 1).toBe(2147483647);
+    expect(0 - 2147483647).toBe(-2147483647);
+    expect(0 - 2147483648).toBe(-2147483648);
+    expect(0 - -2147483647).toBe(2147483647);
+    expect(0 - -2147483648).toBe(2147483648);
+    expect(0 + -2147483647).toBe(-2147483647);
+    expect(0 + -2147483648).toBe(-2147483648);
+});