Adding pantherdb impl

[cmungall]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 26.63317% with 146 lines in your changes are missing coverage. Please review.

Project coverage is 75.76%. Comparing base (36a0db4) to head (72c22f1).

Files	Patch %	Lines
...lementations/pantherdb/pantherdb_implementation.py	21.51%	135 Missing ⚠️
tests/test_implementations/test_pantherdb.py	60.00%	6 Missing ⚠️
src/oaklib/cli.py	0.00%	5 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #713      +/-   ##
==========================================
- Coverage   76.07%   75.76%   -0.32%     
==========================================
  Files         262      264       +2     
  Lines       30388    30583     +195     
==========================================
+ Hits        23118    23171      +53     
- Misses       7270     7412     +142     

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