:sparkles: support xgboost + :package: general maintenance

[jvdd]

This PR does the following:

• [x] :sparkles: add support for XGboost, resolves #28
• [x] :robot: add Makefile for formatting commands
• [x] :broom: properly format the files :lotus_position:
• [x] :detective: add ruff for checks
• [x] :heavy_check_mark: add Python 3.10 to test matrix

[codecov-commenter]

Codecov Report

Merging #30 (1773f84) into main (570a181) will increase coverage by 0.86%. The diff coverage is 87.27%.

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
+ Coverage   83.00%   83.87%   +0.86%     
==========================================
  Files           6        6              
  Lines         353      372      +19     
==========================================
+ Hits          293      312      +19     
  Misses         60       60              

Impacted Files	Coverage Δ
powershap/powershap.py	68.67% <50.00%> (ø)
powershap/shap_wrappers/shap_explainer_factory.py	85.71% <66.66%> (ø)
powershap/shap_wrappers/shap_explainer.py	96.79% <97.22%> (+0.39%)	:arrow_up:
powershap/__init__.py	100.00% <100.00%> (ø)
powershap/shap_wrappers/__init__.py	100.00% <100.00%> (ø)
powershap/utils.py	96.66% <100.00%> (ø)

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