refactor!: Remove custom Enums

[DA-344]

Summary

This uses the _missing_ classmethod provided by the stdlib to handle unknown values in enums. This is essentially the reason why the custom Enum was made.

This may also solve many problems caused by the custom Enum class (such as the annoying type warnings of Pylance).

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.

[pycord-app]

Thanks for opening this pull request!
Please make sure you have read the Contributing Guidelines and Code of Conduct.

This pull request can be checked-out with:

git fetch origin pull/136/head:pr-136
git checkout pr-136

This pull request can be installed with:

pip install git+https://github.com/Pycord-Development/pycord-next@refs/pull/136/head

[read-the-docs-community]

Documentation build overview

📚 pycord-next | 🛠️ Build #29837360 | 📁 Comparing 4527ccd against latest (1509fba)

🔍 Preview build

Show files changed (6 files in total): 📝 6 modified | ➕ 0 added | ➖ 0 deleted

File	Status
api/data_classes.html	📝 modified
api/models.html	📝 modified
api/ui_kit.html	📝 modified
_modules/discord/enums.html	📝 modified
ext/commands/api.html	📝 modified
ext/pages/index.html	📝 modified

[Paillat-dev]

This seems nice overall,but why don't I have the button to merge master in here ? Also please update the CHANEGLOG-V3.md

[Paillat-dev]

@DA-344 DO you have the button to "Update Branch"

[DA-344]

uhh no, just Merge lol

[Paillat-dev]

Ooh it's because your base branch is pycord not Pycord-next

[Paillat-dev]

wharever

[Lumabots]

see pr

[Lumabots]

#140

[Paillat-dev]

@DA-344 Did you test this one ? I will trust your good faith

[DA-344]

Yeah it's tested, repro code (using VerificationLevel enum as an example):

class VerificationLevel(Enum, comparable=True):
    none = 0
    low = 1
    medium = 2
    high = 3
    highest = 4


print(VerificationLevel.low)
unknown = VerificationLevel(10)
print(unknown)
print(VerificationLevel.low < unknown)
print(VerificationLevel(10) is unknown)
print(VerificationLevel.low < VerificationLevel.high)
print(VerificationLevel.low > VerificationLevel.high)

output:

VerificationLevel.low
VerificationLevel.unknown_10
True
True
True
False

[Paillat-dev]

Here goes nothing