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/const-reassignment.js

@@ -0,0 +1,16 @@
+test("reassignment to const", () => {
+    const constantValue = 1;
+    expect(() => {
+        constantValue = 2;
+    }).toThrowWithMessage(TypeError, "Invalid assignment to const variable");
+    expect(constantValue).toBe(1);
+});
+
+test("const creation in inner scope", () => {
+    const constantValue = 1;
+    do {
+        const constantValue = 2;
+        expect(constantValue).toBe(2);
+    } while (false);
+    expect(constantValue).toBe(1);
+});