Allow multiple owners/have an "admin role" for teams

[tsunyoku]

Basic idea would be to have numerous people able to accept/reject invitations into a team, but generally should share anything the clan owner can do other than disband/delete the clan.

[iSlodinxOsu]

Could be nice to add permission features aswell, like for an example allowing admins to change the banner or something like that, like Discord features for the server etc etc.

[Corne2Plum3]

Would be very useful on huge teams with above 100 members