Captcha

[No-WiFi]

Is your feature request related to a problem? Please describe. Are you a spam bot? Because I got a captcha for you to do

Describe the solution you'd like User gets challenged by bot on join with a captcha. Alternatively if bot did not start the challenge, the user can start the challenge via a command, e.g !verify.

Upon completion of the challenge, the user obtains a role. Otherwise, if they fail multiple challenges, they are either flagged for investigation by staff, or they're kicked from server.

Describe alternatives you've considered

Additional context