feat: update certificate handling and project management features

- Refactored CertificateHistory component to display dynamic certificate images.
- Modified CertificateNotAvailable component text for clarity on certificate publication.
- Enhanced CertificateForm to include file preview and clear functionality for uploaded images.
- Removed obsolete CertificatePage component to streamline mentor interface.
- Updated CertificateResult to handle project details and loading states more effectively.
- Improved HomeMentorPage structure by adjusting imports for better organization.
- Enhanced EligibleInternTable with navigation to results and improved error handling for certificate generation.
- Updated HomeMentorProject styles for consistency with design system.
- Added utility function to resolve image URLs for certificates.
- Introduced new hooks for generating certificates and managing notifications.
- Expanded project service functions to include project completion and assignable interns retrieval.
- Updated types for certificates and projects to reflect new data structures.
- Added user types for better type safety in user management.

src/App.tsx

@@ -118,8 +118,8 @@ function App() {
             <Route index element={<HomeMentorPage />} />
             <Route path="projects" element={<MentorProjectsPage />} />
             <Route path="certificates" element={<MentorCertificatePage />} />
-            <Route path="certificates/:id" element={<CertificateDetail />} />
-            <Route path="certificates/:id/result" element={<CertificateResult />} />
+            <Route path="certificates/:slug" element={<CertificateDetail />} />
+            <Route path="certificates/:slug/result" element={<CertificateResult />} />
             <Route path="intern" element={<MentorInternPage />} />
             <Route path="projects/:slug" element={<MentorDetailProject />} />
             <Route path="projects/:slug/:taskSlug" element={<MentorProjectsDetailPage />} />