Cellfinder config + path change

[sfmig]

Implemented some feedback from the workflows code review, specifically issues #36 and #35:

• defined required, optional and internal attributes in the CellfinderConfig class (Cellfinder config improvements #36)
• refactored class methods
• changed default directory where to output results and place downloaded data

I simplified the tests to run only with default/simplest config or skipped them for now, since tests are the focus of PR #62.

[codecov]

Codecov Report

Attention: 28 lines in your changes are missing coverage. Please review.

Comparison is base (0c242b1) 82.37% compared to head (bedd3ba) 81.01%.
Report is 1 commits behind head on main.

❗ Current head bedd3ba differs from pull request most recent head a1fab20. Consider uploading reports for the commit a1fab20 to get more accurate results

Files	Patch %	Lines
benchmarks/cellfinder_core.py	0.00%	12 Missing ⚠️
tests/cellfinder_core/test_unit/test_cellfinder.py	70.27%	11 Missing ⚠️
...globe_workflows/cellfinder_core/cellfinder_core.py	96.52%	4 Missing ⚠️
tests/cellfinder_core/conftest.py	91.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #64      +/-   ##
==========================================
- Coverage   82.37%   81.01%   -1.37%     
==========================================
  Files          27       27              
  Lines        1538     1522      -16     
==========================================
- Hits         1267     1233      -34     
- Misses        271      289      +18     

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[alessandrofelder]

Looks good - tiny comments about comments 😂 - thanks