[feat]: implement public/private key authentication

[michaelgrigoryan25]

This is an issue to track the implementation of public/private key authentication for Stormi

[michaelgrigoryan25]

Using HMAC with a private key seems a more practical way to do this. I may consider replacing RSA with HMAC hashing or removing hashing completely.

[michaelgrigoryan25]

I may consider removing hashing completely and just sticking with a base64 encoded master key that would be provided by the config.yaml file.

Main advantages

• Easier configuration process
• Faster authentication processing times

Here's a diagram

[michaelgrigoryan25]

I have made the final decision to remove private/public key authentication. Users will now be authenticated via a base64 encoded user/password string.