Refactor internify components and services

- Updated LoginInternify to remove unnecessary state initialization.
- Cleaned up NotificationList by removing unused code and fixing button click handler.
- Added project_id prop to InternClaimCert for better data handling.
- Enhanced CertificateNotAvailable to include claim functionality with loading and error states.
- Modified HomeHeader to display a default user name.
- Corrected ProjectTimeline to import ProjectTask from the correct type file.
- Implemented loading and error handling in CertificateListPage.
- Improved MentorProjectDetailPage to handle task updates and navigation correctly.
- Enhanced MentorSettingsPage to manage profile picture errors and state.
- Updated AddInternsDialog to use the correct hook for fetching interns.
- Refactored EditSubmissionTask to handle task updates and errors more effectively.
- Improved MentorProjectCard to include project archiving functionality.
- Removed deprecated useInterns hook and replaced it with useUser for fetching user data.
- Added new useMentors hook for managing mentor-related operations.
- Cleaned up CertificateService by removing unused verifyCertificate function.
- Created MentorServices for managing mentor data operations.
- Updated UserService to include fetching Mahasiswa data and removed unused UserServices file.

src/Pages/internify/mentor/CertificateListPage.tsx

@@ -2,6 +2,7 @@
 import { useNavigate } from "react-router-dom";
 import CertificateProjectCard from "./components/CertificateProjectCard";
 import { useProjects } from "../../../hooks/useProjects";
+
 // ─── Main Page ────────────────────────────────────────────────────────────────
 export default function CertificateList() {
   const navigate = useNavigate();
@@ -11,6 +12,13 @@ export default function CertificateList() {
     navigate(`/mentor/certificates/${slug}`);
   };
 
+  if (loading){
+    <p>on loading</p>
+  }
+
+  if (error){
+    <p>error: {error}</p>
+  }
   return (
     <div>
       {/* Page Header */}