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/provider.go

@@ -32,6 +32,8 @@ func ProvideHandlers(
 	getMe *me.GetMeHTTPHandler,
 	updateMe *me.PutUpdateMeHTTPHandler,
 	deleteMe *me.DeleteMeHTTPHandler,
+	changeEmailRequest *me.PostChangeEmailRequestHTTPHandler,
+	changeEmailVerify *me.PostChangeEmailVerifyHTTPHandler,
 
 	// User
 	userPublicLookup *user.UserPublicLookupHTTPHandler,
@@ -112,6 +114,8 @@ func ProvideHandlers(
 		getMe,
 		updateMe,
 		deleteMe,
+		changeEmailRequest,
+		changeEmailVerify,
 
 		// User
 		userPublicLookup,