Refactor utils transform functions + unit-tests

[amirhessam88]

• Introduced the new layout functionality i.e. utils/_transform.py and the same for tests/.
• Added unit-test for utils.
• Added placeholder to start refactoring classification/ and regression.
• Updated poe format with additional flag for add-trailing-comma.
• Added docstring examples in utils/__init__.py

[codecov]

Codecov Report

Merging #96 (205f21c) into master (23446d3) will increase coverage by 0.77%.
The diff coverage is 100.00%.

❗ Current head 205f21c differs from pull request most recent head 8482127. Consider uploading reports for the commit 8482127 to get more accurate results

@@            Coverage Diff            @@
##           master     #96      +/-   ##
=========================================
+ Coverage    0.24%   1.02%   +0.77%     
=========================================
  Files          10      10              
  Lines        2047    2054       +7     
  Branches      487     490       +3     
=========================================
+ Hits            5      21      +16     
+ Misses       2042    2033       -9     

Flag	Coverage Δ
unittests	1.02% <100.00%> (+0.77%)	⬆️

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Impacted Files	Coverage Δ
src/slickml/utilities.py	0.00% <ø> (ø)
src/slickml/utils/_transform.py	100.00% <100.00%> (ø)

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[amirhessam88]

We are gonna ENFORE this from now on; to make sure named args rather positional args.