Add support for guild incidents

[Soheab]

Summary

This PR adds support for the incidents_data field on guilds.

Relevant API Docs:

• docs: document incident actions discord/discord-api-docs#6396

This was discussed in discord.py >💬Guild incident data

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, ...)

[Rapptz]

With this API, there's no way to edit the incident data from a clean slate. What I mean is, if e.g. Guild.incidents_data is None because it's unset then there's no way to add new incident data.

I'm honestly unsure how I feel about the attribute as a whole, it does mirror the API as-is so it's not particularly controversial but it doesn't feel very ergonomic.

It would be nice if there was e.g. Guild.invites_paused() -> bool and Guild.dms_paused() -> bool helper functions. I don't know if the are_ prefix is good for these, it feels awkward.

[Soheab]

With this API, there's no way to edit the incident data from a clean slate. What I mean is, if e.g. Guild.incidents_data is None because it's unset then there's no way to add new incident data.

Looks like I forgot to change the type but it does always return an instance of IncidentData to use .edit on.

I'm honestly unsure how I feel about the attribute as a whole, it does mirror the API as-is so it's not particularly controversial but it doesn't feel very ergonomic.

Not sure either. Maybe the two fields should just be on Guild.edit and have those helper methods mentioned above? Or a method called edit_security_actions(...) -> Guild or something like that (edit_incidents, ...).

[Rapptz]

This implementation is much better.

[Rapptz]

This looks good, thanks.