Add Namespace API

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 20 lines in your changes missing coverage. Please review.

Project coverage is 21.26%. Comparing base (3a68347) to head (3333e8c).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/OpenSwiftUICore/Data/Namespace.swift	0.00%	20 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #214      +/-   ##
==========================================
- Coverage   21.29%   21.26%   -0.04%     
==========================================
  Files         307      308       +1     
  Lines       13161    13181      +20     
==========================================
  Hits         2803     2803              
- Misses      10358    10378      +20     

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