Description

Add functionality to the user service to generate and send One-Time Passwords (OTPs) via email. This feature will enhance user authentication by supporting OTP-based verification flows such as login and multi-factor authentication.

Objectives

• Generate secure, time-limited OTP codes.
• Integrate email provider to send OTP emails.
• Ensure OTP storage and validation logic on the backend.
• Handle OTP expiration and retry limits.
• Provide APIs/endpoints for requesting and verifying OTPs.
• Support configurable OTP length and validity period.