Add a mobile otp authentication using twilio (JAVA Spring Boot)

**Describe the bug**
Twilio OTP authentication is not working. Users are not receiving the OTP on their registered mobile numbers, resulting in a failed login process.

**To Reproduce**
Steps to reproduce the behavior:

1. Go to the login page.
2. Enter the mobile number and click on 'Send OTP'.
3. Wait for the OTP SMS to arrive.
3. No OTP is received

**Expected behavior**
Users should receive an OTP SMS on their registered mobile numbers within a few seconds to proceed with the authentication.

**Additional context**
- The issue could be related to the Twilio configuration (SID/Auth Token) or incorrect mobile number formatting.
- Verified that Twilio credentials are correct, and the account is active with a valid phone number.
- Tried using different numbers but still no OTP received.