support: @Namespace of SwiftUI

[YusukeHosonuma]

As-is

ContentView(
    _namespace: Namespace(id: 83),
    _namespace2: Namespace(id: 84)
)

To be

prettyPrint

ContentView(
    namespace: 83,
    namespace2: 84
)

prettyPrintDebug

ContentView(
    namespace: @Namespace(id: 83),
    namespace2: @Namespace(id: 84)
)

[codecov-commenter]

Codecov Report

Merging #187 (c927de6) into main (f9594ab) will decrease coverage by 0.42%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main     #187      +/-   ##
==========================================
- Coverage   76.42%   76.00%   -0.43%     
==========================================
  Files          13       13              
  Lines         666      675       +9     
==========================================
+ Hits          509      513       +4     
- Misses        157      162       +5     

Impacted Files	Coverage Δ
Sources/Core/PrettyDescriber.swift	69.66% <50.00%> (-0.71%)	⬇️

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[sahara-ooga]

👌