export isAdmin function to auth.service

src/helpers/services/auth.service.js

@@ -24,3 +24,6 @@ export const authHeader = () => {
 };
 
 export const loggedIn = JSON.parse(localStorage.getItem('user')) && 1;
+
+export const isAdmin =
+  loggedIn && JSON.parse(localStorage.getItem('user'))?.data?.role;