skpkg: migrate documentation, add news

[tinatn29]

CI failing because of codespell cutted. The documentation built successfully locally with a warning -- currently index.rst has a section called getting_started (from scikit-package), but there's no getting-started.rst file, not sure if we want to add it?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.78%. Comparing base (f28e035) to head (5e3f935).
Report is 4 commits behind head on migration.

Additional details and impacted files

@@            Coverage Diff             @@
##           migration      #85   +/-   ##
==========================================
  Coverage      93.78%   93.78%           
==========================================
  Files              4        4           
  Lines            177      177           
==========================================
  Hits             166      166           
  Misses            11       11           

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[sbillinge]

@tinatn29 I merged the fix for cutted so maybe retry this one?

[tinatn29]

@sbillinge I merged the upstream/migration updates into this branch. CI is passing now!