Inconsistent naming convention for presence and status

[Lunaphied]

Currently, Discord has two concepts in it's API: status (online/offline/dnd/idle/invisible), and activities (" is playing a game", etc.). Together these are referred to by Discord as the user's "presence".

Internally we mostly refer to Discord's "status" as a "presence", except in a few spots we've started to call it "status" again.

Especially confusingly, we consistently refer to Discords "activities" as a "status", which now collides with our own internal concept called "status", which makes parsing through this logic especially difficult.

These should be reconciled into a single concept, likely matching the Discord provided names as that will match both the API documentation for Discord itself and discord.py's documentation.