feat: implement premium Email 2FA authentication integrated with auth flow

resources/views/emails/two-factor-code.blade.php

@@ -0,0 +1,22 @@
+@component('mail::message')
+# Two-Factor Verification Code
+
+Hello,
+
+You are receiving this email because a login attempt was made on your account that requires **Two-Factor Authentication**.
+
+Use the 6-digit verification code below to complete your login:
+
+@component('mail::panel')
+<div style="text-align: center;">
+<h1 style="font-family: monospace; font-size: 32px; letter-spacing: 6px; margin: 0; color: #3D4E4B; font-weight: 800;">{{ $code }}</h1>
+</div>
+@endcomponent
+
+*This code is valid for **10 minutes** from generation. If the code expires, you can request a new one.*
+
+If you did not attempt to log in to your account, please ignore this email or update your password immediately to protect your credentials.
+
+Thanks,<br>
+{{ config('app.name') }}
+@endcomponent