[Feat] Add Rate Limiting to SMS service

[MUHSIN-M-P]

I can implement rate limiting for the SMS service using server memory, a database, ,(both of these store the last OTP send time) or Redis.
which one i have to setup ?

@Harish-2003 please consider me for this GSSOC25 (label also)

[Harish-2003]

Which one do you think is best I think reddis would be better?
What would u suggest?

[MUHSIN-M-P]

redis would be better , since it Automatically expires old records and best for production, i can proceed if you assign