Add Queue Based Implementation on Sending Registration, Deregistration for OTPs

[garvit-joshi]

Currently, While registration and deregistration, APIs are facing latency due to Sending OTPs to email at the time of user creation and de-registration.

We will be adding a queue-based solution where the registration and de-registration process will add an object to a queue that will contain the user's email, username, and his/her's OTP. This queue then will be picked up by a scheduler which will send OTPs asynchronously, through virtual threads.

References:

• Virtual Threads
• Queue

[garvit-joshi]

Testing Open PR GitHub Action

[garvit-joshi]

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