feat : Test OTP

• added test for opt generate and validate

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0.0.2

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initial release

✅ Rate-limited OTP generation
✅ Configurable expiration times
✅ Invalidate OTP after first use
✅ Lock OTP to user session
✅ Invalidate OTP after too many failed attempts
✅ View detailed error messages
✅ Customizable mail template
✅ Auditable logs for security