[docs] Add attributetable to enums

[Puncher1]

Summary

As discussed in the discord.py server.
This PR adds an attributetable to every enum. This provides better navigation through a larger enum. Due of consistency an attributetable is added to every enum.

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, ...)