Add packaging check to CI

[jeromekelleher]

Based on similar approach taken in tskit-dev/msprime#2471

Would be worth generalising from here so that this can be used across ecosystem

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.76%. Comparing base (ba6f9f4) to head (a94a1d3).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3373   +/-   ##
=======================================
  Coverage   89.76%   89.76%           
=======================================
  Files          29       29           
  Lines       31286    31286           
  Branches     5738     5738           
=======================================
  Hits        28083    28083           
  Misses       1794     1794           
  Partials     1409     1409           

Flag	Coverage Δ
c-tests	86.77% <ø> (ø)
lwt-tests	80.38% <ø> (ø)
python-c-tests	87.12% <ø> (ø)
python-tests	98.84% <ø> (ø)
python-tests-no-jit	33.46% <ø> (ø)
python-tests-numpy1	50.24% <ø> (ø)

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[benjeffery]

I thought https://github.com/tskit-dev/tskit/blob/main/.circleci/config.yml#L200 already covered this?

[jeromekelleher]

Ah yes, good point - I've deleted the tests from CircleCI (which are less comprehensive)

[jeromekelleher]

I think this is ready for merging

[benjeffery]

LGTM