feat: display C# special types using familiar format

[yufeih]

Addresses #5599

[codecov]

Codecov Report

Base: 76.64% // Head: 76.66% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (0738883) compared to base (f34abfb).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8372      +/-   ##
==========================================
+ Coverage   76.64%   76.66%   +0.02%     
==========================================
  Files         940      940              
  Lines       35281    35281              
==========================================
+ Hits        27040    27048       +8     
+ Misses       8241     8233       -8     

Impacted Files	Coverage Δ
...etadata.ManagedReference.Roslyn/SymbolFormatter.cs	100.00% <100.00%> (+1.09%)	⬆️
...dReference.Roslyn/Visitors/CSYamlModelGenerator.cs	100.00% <100.00%> (ø)
...dReference.Roslyn/Visitors/VBYamlModelGenerator.cs	100.00% <100.00%> (ø)
....ManagedReference.Roslyn/Visitors/VisitorHelper.cs	90.00% <100.00%> (ø)
...osoft.DocAsCode.Tests.Common/TestLoggerListener.cs	94.33% <0.00%> (+1.88%)	⬆️
src/Microsoft.DocAsCode.Common/Git/GitUtility.cs	78.19% <0.00%> (+3.19%)	⬆️

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