Feature - Raw Presence Updates

[EvieePy]

Summary

A current limitation of the library is not being able to listen to presence updates without meeting certain requirements, namely needing both member intents and a member and guild cache. In cases where these requirements are not available or desired, presence updates are still received and discarded. This PR adds functionality for the on_raw_presence_update event, which allows anyone not subscribed to member intents or not using a member or guild cache to receive presence update events.

Currently the implementation is semi opt-in, allowing anyone to manually enable or disable raw presences via the new Client keyword parameter. By default this event is only enabled automatically when a user has presences intents enabled and members intents disabled, as this would mean they could not receive the currently available on_presence_update event.

Added

• on_raw_presence_update
• RawPresenceUpdateEvent model received in the event and used in Member to update presence data.
• Client(enable_raw_presences=...) keyword argument.
• ClientStatus - Previously a private internal. The model representing Client Status data from discord.
• Member.client_status - Previously a private internal.

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, ...)

[MCausc78]

I actually needed this feature. Thanks.

[Rapptz]

Change looks mostly okay, just a bit confusing at places.