switch build to hatchling

[d-chambers]

Description

The publish to pypi with uv is broken due to this setuptools bug. This PR tries to switch unidas build system to hatchling to resolve the issue.

Checklist

I have (if applicable):

• referenced the GitHub issue this PR closes.
• documented the new feature with docstrings or appropriate doc page.
• included a test.
• added the "ready_for_review" tag once the PR is ready to be reviewed.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.18%. Comparing base (0bdccf5) to head (e0b801e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #5   +/-   ##
=======================================
  Coverage   93.18%   93.18%           
=======================================
  Files           1        1           
  Lines         308      308           
=======================================
  Hits          287      287           
  Misses         21       21           

Flag	Coverage Δ
unittests	93.18% <ø> (ø)

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