Add ViewModifier implementation

[Kyle-Ye]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 155 lines in your changes are missing coverage. Please review.

Project coverage is 14.18%. Comparing base (e16ee45) to head (06b7f78).

Files	Patch %	Lines
...ore/Modifier/ViewModifier/CustomViewModifier.swift	0.00%	53 Missing ⚠️
...es/OpenSwiftUI/Core/Modifier/ModifiedContent.swift	0.00%	37 Missing ⚠️
...ftUI/Core/Modifier/ViewModifier/ViewModifier.swift	0.00%	26 Missing ⚠️
...ources/OpenSwiftUI/Core/View/View/ViewInputs.swift	0.00%	10 Missing ⚠️
...ources/OpenSwiftUI/View/Debug/TODO/ViewDebug.swift	0.00%	9 Missing ⚠️
...rces/OpenSwiftUI/Core/Modifier/EmptyModifier.swift	0.00%	7 Missing ⚠️
...ces/OpenSwiftUI/Core/View/View/ViewInputFlag.swift	0.00%	4 Missing ⚠️
...iftUI/Core/View/ViewList/ViewListCountInputs.swift	0.00%	4 Missing ⚠️
...OpenSwiftUI/Core/View/View/ViewInputBoolFlag.swift	0.00%	2 Missing ⚠️
...penSwiftUI/Core/View/ViewList/ViewListInputs.swift	0.00%	2 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #91      +/-   ##
==========================================
- Coverage   14.50%   14.18%   -0.33%     
==========================================
  Files         196      199       +3     
  Lines        4757     4866     +109     
==========================================
  Hits          690      690              
- Misses       4067     4176     +109     

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