Clickable roles

A function that lets any user click on a role that has been @ed in the chat. This should then open a small scrollable menu which shows everyone with that role assigned to them. I think this would benefit servers that for instance run tournaments in the way that it would be easier for users to see who is part of what team by clicking the role.

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@Astralis

(pfp) gla1ve
(pfp) dev1ce
(pfp) dupreeh
(pfp) Xyp9x
(pfp) Magisk
(pfp) Bubskji
(pfp) zonic