rich presance for bots

[CottageDwellingCat]

Description
Add an endpoint that could be used to make bots "play" a game, similar to the gamesdk, with support for timestamps, small and large images, etc.

Why This is Needed
This would allow for more in depth at-a-glance information for users, including things like uptime, help commands, and even allow bots to add buttons linking to things like there help site.

Alternatives Considered

• Putting information in a "playing" status, however this doesn't allow for dynamically updated timestamps or links, and less information can be displayed.
• Having an info command listed in the status, that requires more user interaction and can annoy other users with command-spam. This also does not edit itself over time, and would require the command be re-run if information were to change (for example a bot switching shards)