feat: Implement email change functionality

This commit introduces the following changes:

-   Added new API endpoints for email change requests and
    verification.
-   Updated the backend code to support email change workflow,
    including validation, code generation, and email sending.
-   Updated the frontend to include components for initiating and
    verifying email changes.
-   Added new dependencies to support email change functionality.
-   Updated the existing components to include email change
    functionality.

https://codeberg.org/mapleopentech/monorepo/issues/1

cloud/maplefile-backend/internal/interface/http/server.go

@@ -110,6 +110,8 @@ func (s *Server) registerRoutes() {
 	s.mux.HandleFunc("GET /api/v1/me", s.handlers.GetMe.ServeHTTP)
 	s.mux.HandleFunc("PUT /api/v1/me", s.handlers.UpdateMe.ServeHTTP)
 	s.mux.HandleFunc("DELETE /api/v1/me", s.handlers.DeleteMe.ServeHTTP)
+	s.mux.HandleFunc("POST /api/v1/me/email/change-request", s.handlers.ChangeEmailRequest.ServeHTTP)
+	s.mux.HandleFunc("POST /api/v1/me/email/change-verify", s.handlers.ChangeEmailVerify.ServeHTTP)
 
 	// Blocked Email routes
 	s.mux.HandleFunc("POST /api/v1/me/blocked-emails", s.handlers.CreateBlockedEmail.ServeHTTP)