feat: add ThreadAutoArchiveDuration enum

[BOXERRMD]

Add an enumeration ThreadAutoArchiveDuration to get time before the thread was archived.

The selected enumeration value is automatically retrieved. You can always set the archiving time as a number without using this enumeration.

Summary

This pull request doesn't make any corrections to the code, but adds an enumeration to help find the available thread archive times.
It's not necessarily necessary, but it makes the code easier to read and understand.

Information

• 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, typehinting,
  examples, ...).

Checklist

• I have searched the open pull requests for duplicates.
• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why.
• I have updated the changelog to include these changes.

[Paillat-dev]

I don't really see the benefit of this.

[BOXERRMD]

It just brings more understanding to the code. Yes, the modification isn't necessarily important, but it avoids having numbers that can be boring to read, and gives a better understanding of the time provided. You can even use enumeration to enable interactive modification with a bot without having to put in the four possibilities and just use enumeration.
(I'm trying to defend my idea because I had this problem at one point and I had to ask on the discord support to find out what archiving times were available :') )

[BOXERRMD]

I have apply changes ! :D

[Paillat-dev]

Also, please add the enum to the docs in https://github.com/Pycord-Development/pycord/blob/master/docs/api/enums.rst
Look at the other enums in the file and reproduce how they are declared.

[Dorukyum]

I find this not very necessary. See the documentation and the type ThreadArchiveDuration.

pycord/discord/types/threads.py

Line 36 in 1c65fc8

ThreadArchiveDuration = Literal[60, 1440, 4320, 10080]

[BOXERRMD]

I find that just the figures as shown remain rather unclear about the actual time given. The addition I'm proposing doesn't add anything vital, but I think it makes the code easier to understand, without being compulsory.

[Paillat-dev]

I find this not very necessary.

Same to be fair, but as long as it's just an Enum class I feel like the changes are acceptable, unlike the original proposition which added too much verbosity. Although this is not strictly necessary.

[BOXERRMD]

👍 I have make changes !

[Paillat-dev]

As fare as code quality goes, lgtm.

From a usefulness perspective, I don't think this is strictly necessary but I feel like it's a plus to have.

[Lulalaby]

Also we have merge conflicts

[BOXERRMD]

Most imports are automatically modified by bots that reformat the code once the pull request is made

[Lulalaby]

then disregard. But please fix the merge conflicts