CheckServerMembership is true if the user is a member of our guild.

GetUser returns the user object matching the given user id.

GetUserId returns the discord user id using the user's access token.

GiveDonator grants the donator role to the user and verifies them.

GiveVerified grants the user the verified role which allows them to see channels and talk in them.

JoinOurServer adds the user matching discordId to our discord server.

SetDonator updates the roles for the given discord user without treating it like a new donation.

User is a wrapper around discordgo.User so that we can feel ok about exporting it, we also set Avatar to a full url instead of just the id for json reasons.