Add DynamicBody implementation

[Kyle-Ye]

Close #64

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 56 lines in your changes are missing coverage. Please review.

Project coverage is 13.38%. Comparing base (fa83a71) to head (279fa53).

Files	Patch %	Lines
...I/Data/Model/DynamicProperty/DynamicProperty.swift	0.00%	42 Missing ⚠️
.../Model/DynamicProperty/DynamicPropertyBuffer.swift	0.00%	11 Missing ⚠️
...urces/OpenSwiftUI/Data/Model/Binding/Binding.swift	0.00%	2 Missing ⚠️
Sources/OpenSwiftUI/Core/Graph/GraphInputs.swift	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #72      +/-   ##
==========================================
- Coverage   13.42%   13.38%   -0.04%     
==========================================
  Files         185      185              
  Lines        4357     4369      +12     
==========================================
  Hits          585      585              
- Misses       3772     3784      +12     

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