Revoke / Re-generate token functionality

[jewel-rana]

I think Token Revoke when user logged out is necessary. Also Re-generate token / Override / Refresh token for more security

[ParitoshVaidya]

I'm planning to upgrade this repo with CI 4 and basic auth, and OAuth feature.

Edit 1: I upgraded this repo for CI 4. I will add basic auth, and OAuth in coming days...

[nicojmb]

It would be nice to have examples of revoke or refresh token as @jewel-rana says