feat: add new embedded activities

[JustaSqu1d]

Summary

Adds "new" embedded activities.

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.

[plun1331]

lgtm

[codecov]

Codecov Report

Merging #2102 (c95b654) into master (d3f6cc8) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2102   +/-   ##
=======================================
  Coverage   33.12%   33.13%           
=======================================
  Files          97       97           
  Lines       19137    19139    +2     
=======================================
+ Hits         6340     6342    +2     
  Misses      12797    12797           

Flag	Coverage Δ
macos-latest-3.10	33.12% <100.00%> (+<0.01%)	⬆️
macos-latest-3.11	33.12% <100.00%> (+<0.01%)	⬆️
macos-latest-3.8	33.13% <100.00%> (+<0.01%)	⬆️
macos-latest-3.9	33.13% <100.00%> (+<0.01%)	⬆️
ubuntu-latest-3.10	33.12% <100.00%> (+<0.01%)	⬆️
ubuntu-latest-3.11	33.12% <100.00%> (+<0.01%)	⬆️
ubuntu-latest-3.8	33.13% <100.00%> (+<0.01%)	⬆️
ubuntu-latest-3.9	33.13% <100.00%> (+<0.01%)	⬆️
windows-latest-3.10	33.12% <100.00%> (+<0.01%)	⬆️
windows-latest-3.11	33.12% <100.00%> (+<0.01%)	⬆️
windows-latest-3.8	33.13% <100.00%> (+<0.01%)	⬆️
windows-latest-3.9	33.13% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
discord/enums.py	79.96% <100.00%> (+0.07%)	⬆️

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