feat: Radio Groups & Checkboxes

[NeloBlivion]

Summary

Implements radio groups, checkbox groups, and checkboxes in modals

Alpha server only right now

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/3073/head:pr-3073
git checkout pr-3073

This pull request can be installed with:

pip install git+https://github.com/Pycord-Development/pycord@refs/pull/3073/head

[Lulalaby]

SMH blindly copying

[Paillat-dev]

For the record, PR tested and everything seems to work fine other than obviously the comments

[Paillat-dev]

@Lumabots when you have time you can test this if you want

[Paillat-dev]

lgtm; tested