Real Patreon Support

[leighmacdonald]

There was some very basic patreon support at one point, but it was largely scrapped/put on hold. We do want to support some monetization though to hopefully not permanently be running at a cost deficit. I do want to bring this back with proper integrations to allow stuff like:

• Forum stuff like supporter roles under avatars or something like steam pfp borders. Allow animated pfps/signatures. Private forums access, more?
• Access to more in depth stats, maybe with some fancy graphs. These are generally a bit more computationally heavy, so i don't mind gating these features, at least for UT, it should be configurable though. The new stats parser have a lot more information that can be extracted.
• Something in discord? Assign special icons or something? There is already basic role support provided by patreon bot directly though
• We do not want to ever introduce in-game benefits for UT, but im sure other hosts would probably want stuff like vip/reserved slots in game, probably some other stuff too that lots of other servers offer their users. Maybe a generic system that gives access to custom commands of the admins choosing, like !rtd (gross), etc.

Before all that can happen, we should first enable linking patreon accounts to user accounts. IIRC we will need to make sure we periodically refresh the user access tokens.