Added login functionality and a redirect if not logged in

frontend/src/auth/PrivateRoute.js

@@ -0,0 +1,18 @@
+import { Component } from "react";
+import { Redirect, Route } from "react-router-dom";
+import { useAuth } from "./AuthProvider";
+
+const PrivateRoute = ({ component: Component, ...rest }) => {
+  const [logged] = useAuth();
+
+  return (
+    <Route
+      {...rest}
+      render={(props) =>
+        logged ? <Component {...props} /> : <Redirect to="/login" />
+      }
+    />
+  );
+};
+
+export default PrivateRoute