Add some comments to transform class.

[chrneumann]

Some comments i added to the Transform class that helped me to understand the internals.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.82%. Comparing base (8818fe3) to head (0f05c91). Report is 476 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4504      +/-   ##
==========================================
- Coverage   87.88%   87.82%   -0.07%     
==========================================
  Files         246      246              
  Lines       33450    33450              
  Branches     2208     2222      +14     
==========================================
- Hits        29399    29378      -21     
- Misses       3050     3052       +2     
- Partials     1001     1020      +19     

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[HarelM]

I'll hold up with this PR as the globe is doing some radical changes in transform class. If you could redo this PR against the globe branch it would be great.

[HarelM]

@chrneumann transform class has changed dramatically. I'll close this PR for now, if you feel this is needed please open a new PR against the new code. Thanks for taking the time to contribute!