Change folder structure and fix auth flow.

src/api/userRoles.ts

 export enum Roles {
   /** Website visitor, is not logged. Can access to NonAuthRoutes */
   visitor = '',
-  /** Can access to private and restricted routes depending on their permissions level. */
+  /** Can access to routes wrapped by withAuthorization. */
   senior = 'senior',
   admin = 'admin',
   operator = 'operator',
+  driver = 'driver',
 }