add support for kicking/banning users

[Rexogamer]

checklist:

• kick support
• ban support
• group support
• interactivity (add --interactive flag #2)
• reason support

things to consider:

• servers only, or should this support groups
  • (does revolt.js support removing users from groups?)
• reason support? revolt doesn't have audit logs but they're planned, so presumably reasons will be added (edit: you can specify a reason for bans)