implement new invitation system

* fix comments on the frontend
* move jwt token service to its own module
* other fixes and updates

apps/client/src/features/user/hooks/use-current-user.ts

@@ -1,12 +1,12 @@
 import { useQuery, UseQueryResult } from "@tanstack/react-query";
-import { getUserInfo } from "@/features/user/services/user-service";
+import { getMyInfo } from "@/features/user/services/user-service";
 import { ICurrentUser } from "@/features/user/types/user.types";
 
 export default function useCurrentUser(): UseQueryResult<ICurrentUser> {
   return useQuery({
     queryKey: ["currentUser"],
     queryFn: async () => {
-      return await getUserInfo();
+      return await getMyInfo();
     },
   });
 }