feat: Implement email functionality with FastAPI-Mail and Mailhog

- Updated docker-compose.yml to include Mailhog service for email testing.
- Added environment variables for email configuration in docker-compose.
- Updated requirements.txt to include fastapi-mail for email support.
- Created templates for password reset, email verification, and welcome emails.
- Developed mail utility module to handle sending emails using FastAPI-Mail.
- Added documentation for email testing with Mailhog.

app/templates/auth/profile.html

@@ -34,7 +34,7 @@
           
           <div class="bg-cream-white p-4 rounded-md">
             <h3 class="font-semibold text-irish-green mb-1">Member Since</h3>
-            <p>{{ user.created_at.split(' ')[0] }}</p>
+            <p>{{ user.created_at.strftime('%Y-%m-%d') }}</p>
           </div>
         </div>