feat(email): implement email change request and verification process

- Added functionality for users to request an email change, including generating a verification code and setting an expiration time.
- Implemented methods in the User model to handle email change requests, code validation, and confirmation.
- Created a new job to update the user's email in Stripe after confirmation.
- Introduced rate limiting for email change requests and verification attempts to prevent abuse.
- Added a new notification for email change verification.
- Updated the profile component to manage email change requests and verification UI.

config/constants.php

@@ -70,6 +70,10 @@ return [
         ],
     ],
 
+    'email_change' => [
+        'verification_code_expiry_minutes' => 10,
+    ],
+
     'sentry' => [
         'sentry_dsn' => env('SENTRY_DSN'),
     ],