Add path to dotnet so child processes can use the CLI

[JoeRobich]

No description provided.

[codecov]

Codecov Report

Merging #4459 (2f3b15e) into master (6da0831) will decrease coverage by 0.05%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##           master    #4459      +/-   ##
==========================================
- Coverage   68.96%   68.91%   -0.06%     
==========================================
  Files         108      109       +1     
  Lines        4273     4282       +9     
  Branches      739      741       +2     
==========================================
+ Hits         2947     2951       +4     
- Misses       1123     1128       +5     
  Partials      203      203              

Flag	Coverage Δ
integration	52.56% <80.00%> (+0.03%)	⬆️
unit	85.81% <ø> (ø)

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Impacted Files	Coverage Δ
src/main.ts	84.67% <66.66%> (-0.33%)	⬇️
src/DotnetPack.ts	80.00% <80.00%> (ø)
src/features/semanticTokensProvider.ts	82.00% <100.00%> (ø)
src/features/diagnosticsProvider.ts	77.77% <0.00%> (-3.71%)	⬇️
src/observers/WarningMessageObserver.ts	100.00% <0.00%> (+5.00%)	⬆️

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[JoeRobich]

@nohwnd @vzarytovskii Please review.