Added a FileHasProvider implementation for Unity Version Control#148

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eriknilsontenstar wants to merge 13 commits intomicrosoft:mainfrom

Tenstar-AB:add-uvcs

Commits on Nov 25, 2025

Added a FIleHasProvider implementation for Unity Version Control (Plastic SCM)
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Commits on Nov 28, 2025

Added timeout to tests
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Made reading in the output synchronous since it would otherwise was cause intermittent errors
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