Include more guid chars in pipe path

[rosenbjerg]

#481

[Copilot]

Pull Request Overview

Expands the randomness of pipe names and fixes a typo, while adding tests to ensure pipe path lengths stay within macOS limits.

• Rename GetUnqiuePipeName to GetUniquePipeName
• Increase GUID substring used in pipe names from 5 to 16 characters
• Add tests to validate pipe path length is under macOS’s maximum

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
FFMpegCore/FFMpeg/Pipes/PipeHelpers.cs	Renames the helper method and increases GUID substring length used in pipe names.
FFMpegCore/FFMpeg/Arguments/PipeArgument.cs	Updates call site to the renamed GetUniquePipeName method.
FFMpegCore.Test/ArgumentBuilderTest.cs	Adds input/output pipe path length tests and imports Pipes namespace.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.58%. Comparing base (1c4333e) to head (77d13e8).
⚠️ Report is 129 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #581      +/-   ##
==========================================
- Coverage   71.20%   68.58%   -2.62%     
==========================================
  Files         117      122       +5     
  Lines        2973     3467     +494     
  Branches      284      305      +21     
==========================================
+ Hits         2117     2378     +261     
- Misses        751      974     +223     
- Partials      105      115      +10     

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