allow derived types of DataFrame

[liangfu]

This PR updates DataFrame type checkings to allow derived types of DataFrame as input type.

[codecov-commenter]

Codecov Report

Merging #637 (f95dcb9) into main (a090681) will decrease coverage by 0.01%. The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             main     #637      +/-   ##
==========================================
- Coverage   90.20%   90.18%   -0.02%     
==========================================
  Files          78       77       -1     
  Lines        4563     4556       -7     
  Branches      945      846      -99     
==========================================
- Hits         4116     4109       -7     
  Misses        252      252              
  Partials      195      195              

Flag	Coverage Δ
unittests	90.18% <66.66%> (-0.02%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
hummingbird/ml/_executor.py	82.19% <0.00%> (ø)
...ngbird/ml/containers/sklearn/pytorch_containers.py	83.33% <0.00%> (ø)
hummingbird/ml/_utils.py	88.13% <100.00%> (ø)
...mmingbird/ml/containers/_sklearn_api_containers.py	89.39% <100.00%> (ø)
hummingbird/ml/containers/batch_container.py	85.00% <100.00%> (ø)
hummingbird/__init__.py

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