fix: keep base package importable without ibis

[egillax]

@azimov ,

I just broke the nightly wheel build on develop. Because of importing stuff that needed ibis in api.py. I've fixed it in this and added a quick additional CI test that would expose this before merging PRs so this doesn't happen again.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.37%. Comparing base (0db6e37) to head (4d5d872).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #30      +/-   ##
===========================================
- Coverage    85.39%   85.37%   -0.02%     
===========================================
  Files          167      167              
  Lines        12379    12386       +7     
===========================================
+ Hits         10571    10575       +4     
- Misses        1808     1811       +3     

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