Fix non-streaming output caused by WriteObject(..., enumerateCollection: true)

[santisq]

v3.0.1

Fixed

• Fixed non-streaming output caused by WriteObject(..., enumerateCollection: true).
• TreeBase.Render() now accepts PSCmdlet as a parameter and writes objects directly, enabling proper PowerShell streaming behavior.
• Simplified RegistryMappings API (TryGetKey → Get) since only the five standard registry hives are supported.
• Improved TryGetKey logic in GetPSTreeRegistryCommand for better readability and error handling.

Changed

• Minor internal cleanups and code style improvements.

[codecov]

Codecov Report

❌ Patch coverage is 78.57143% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.23%. Comparing base (781587a) to head (2a181a7).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
src/PSTree/Commands/GetPSTreeRegistryCommand.cs	72.72%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #68      +/-   ##
==========================================
- Coverage   98.24%   98.23%   -0.02%     
==========================================
  Files          38       38              
  Lines         913      906       -7     
  Branches      118      117       -1     
==========================================
- Hits          897      890       -7     
- Misses          9       10       +1     
+ Partials        7        6       -1     

Flag	Coverage Δ
PS-5.1	97.78% <78.57%> (-0.02%)	⬇️
PS-7_Linux	73.96% <14.28%> (+0.35%)	⬆️
PS-7_Windows	97.54% <78.57%> (-0.02%)	⬇️

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