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.

app/Jobs/CleanupInstanceStuffsJob.php

@@ -3,6 +3,7 @@
 namespace App\Jobs;
 
 use App\Models\TeamInvitation;
+use App\Models\User;
 use Illuminate\Bus\Queueable;
 use Illuminate\Contracts\Queue\ShouldBeEncrypted;
 use Illuminate\Contracts\Queue\ShouldBeUnique;
@@ -30,6 +31,7 @@ class CleanupInstanceStuffsJob implements ShouldBeEncrypted, ShouldBeUnique, Sho
     {
         try {
             $this->cleanupInvitationLink();
+            $this->cleanupExpiredEmailChangeRequests();
         } catch (\Throwable $e) {
             Log::error('CleanupInstanceStuffsJob failed with error: '.$e->getMessage());
         }
@@ -42,4 +44,15 @@ class CleanupInstanceStuffsJob implements ShouldBeEncrypted, ShouldBeUnique, Sho
             $item->isValid();
         }
     }
+
+    private function cleanupExpiredEmailChangeRequests()
+    {
+        User::whereNotNull('email_change_code_expires_at')
+            ->where('email_change_code_expires_at', '<', now())
+            ->update([
+                'pending_email' => null,
+                'email_change_code' => null,
+                'email_change_code_expires_at' => null,
+            ]);
+    }
 }