[FIX] Adding fix to allow any kind of tree for honesttree

[adam2392]

Related to #157

Changes proposed in this pull request:

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[codecov]

Codecov Report

Attention: 36 lines in your changes are missing coverage. Please review.

Comparison is base (a81c597) 89.77% compared to head (6b0423c) 88.86%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #158      +/-   ##
==========================================
- Coverage   89.77%   88.86%   -0.92%     
==========================================
  Files          41       41              
  Lines        3395     3439      +44     
==========================================
+ Hits         3048     3056       +8     
- Misses        347      383      +36     

Files	Coverage Δ
sktree/tree/_honest_tree.py	99.43% <100.00%> (+0.01%)	⬆️
sktree/tree/tests/test_honest_tree.py	68.14% <16.27%> (-31.86%)	⬇️

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[adam2392]

FYI @sampan501 these are the changes that I made to allow one to pass in sklearn's DecisionTree.