Move cat encoding inside train loop

[thomasmeissnercrm]

This release adds more robustness and increases performance a bit.

• target encoding will be executed in cross-validated fashion instead of just simple target encoding outside of folds
• datetime features will also produce cyclic transformations of those. To prevent overfitting we ignore all date components that have just one unique value.
• calibrate methods will automatically convert to pandas series if a numpy array has been provided
• Domain checker and Modelmatchmaker support GPU acceleration now

[codecov]

Codecov Report

Attention: Patch coverage is 96.61017% with 10 lines in your changes missing coverage. Please review.

Project coverage is 95.87%. Comparing base (b5ecbd8) to head (e95482c).

Files with missing lines	Patch %	Lines
bluecast/preprocessing/datetime_features.py	94.25%	5 Missing ⚠️
bluecast/blueprints/cast_cv.py	66.66%	3 Missing ⚠️
bluecast/tests/test_datetime_features.py	98.11%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main      #56    +/-   ##
========================================
  Coverage   95.86%   95.87%            
========================================
  Files          97       97            
  Lines        7626     7854   +228     
========================================
+ Hits         7311     7530   +219     
- Misses        315      324     +9     

Flag	Coverage Δ
pytest	95.87% <96.61%> (+<0.01%)	⬆️

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