Rename Auth context files

src/layout.jsx

@@ -4,7 +4,7 @@ import Header from "./components/Header/Header.jsx";
 import Background from "./components/Background/Background.jsx";
 import { Navigate } from "react-router";
 import {  useContext} from "react";
-import { AuthContext } from "./contexts/auth/AuthContext.js";
+import { AuthContext } from "./contexts/Auth/AuthContext.js";
 
 
 function Layout(){