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/Notifications/TransactionalEmails/EmailChangeVerification.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace App\Notifications\TransactionalEmails;
+
+use App\Models\User;
+use App\Notifications\Channels\TransactionalEmailChannel;
+use App\Notifications\CustomEmailNotification;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Support\Carbon;
+
+class EmailChangeVerification extends CustomEmailNotification
+{
+    public function via(): array
+    {
+        return [TransactionalEmailChannel::class];
+    }
+
+    public function __construct(
+        public User $user,
+        public string $verificationCode,
+        public string $newEmail,
+        public Carbon $expiresAt,
+        public bool $isTransactionalEmail = true
+    ) {
+        $this->onQueue('high');
+    }
+
+    public function toMail(): MailMessage
+    {
+        // Use the configured expiry minutes value
+        $expiryMinutes = config('constants.email_change.verification_code_expiry_minutes', 10);
+
+        $mail = new MailMessage;
+        $mail->subject('Coolify: Verify Your New Email Address');
+        $mail->view('emails.email-change-verification', [
+            'newEmail' => $this->newEmail,
+            'verificationCode' => $this->verificationCode,
+            'expiryMinutes' => $expiryMinutes,
+        ]);
+
+        return $mail;
+    }
+}