Fix E721 type comparison pattern handling

[hhatto]

• Added support for new type comparison patterns
• Added indent preservation functionality
• Added test cases for E721

ref: #762

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.97%. Comparing base (5b9a953) to head (3b9d399).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #776   +/-   ##
=======================================
  Coverage   97.96%   97.97%           
=======================================
  Files           1        1           
  Lines        2463     2473   +10     
=======================================
+ Hits         2413     2423   +10     
  Misses         50       50           

Flag	Coverage Δ
3.11	97.53% <100.00%> (+0.01%)	⬆️
3.12	97.81% <100.00%> (+<0.01%)	⬆️

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