Fix Add-Path for self-hosted Windows

[dino182]

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name: 🐞 Bug Fix
about: PATH for the current procees needs to be updated with the newly installed php location
labels: bug

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If you're fixing a bug, adding a new feature or improving something please provide the details in discussions,
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Related discussion: #608

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Description

This PR adds the location of the newly installed php tools to the PATH environment variable so that the current Powershell process can find them.

In case this PR introduced TypeScript/JavaScript code changes:

• I have written test cases for the changes in this pull request
• I have run npm run format before the commit.
• I have run npm run lint before the commit.
• I have run npm run release before the commit.
• npm test returns with no unit test errors and all code covered.

In case this PR edits any scripts:

• I have checked the edited scripts for syntax.
• I have tested the changes in an integration test (If yes, provide workflow YAML and link).

YAML

https://github.com/dino182/setup-php-testing/blob/2024ca4915dc4382028faf8e1bbd8984521564a3/.github/workflows/test.yml

Failed run

https://github.com/dino182/setup-php-testing/runs/7044714697?check_suite_focus=true

Successful run

https://github.com/dino182/setup-php-testing/runs/7044919837?check_suite_focus=true#step:2:23

[codecov]

Codecov Report

Merging #609 (1a2cb4f) into develop (5915ccd) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##           develop      #609   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          529       529           
  Branches        78        78           
=========================================
  Hits           529       529           

Impacted Files	Coverage Δ
src/tools.ts	100.00% <100.00%> (ø)

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[shivammathur]

Thanks for fixing this. Merged 🎉