Copy phpstan config into tool dir

[marschattha]

Similar to eslint, phpstan config files also load dependencies relative to config file path, so we should copy the phpstan configs into tool directory where we install the packages.

[qltysh]

Diff Coverage: The code coverage on the diff in this pull request is 55.6%.

Total Coverage: This PR will not change total coverage.

File Coverage Changes

Path	File Coverage Δ	Indirect
qlty-check/src/executor/invocation_script.rs	-1.4
qlty-config/src/library.rs	-0.5	√

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• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

• File Coverage: Covered Lines divided by Covered Lines plus Missed Lines. (Excludes non-executable lines including blank lines and comments.)

  • Indirect Changes: Changes to File Coverage for files that were not modified in this PR. Learn more.

[qltysh]

All good ✅

[brynary]

Approving the code, but would like to get confirmation from the customer this works before merging

[marschattha]

Merging - https://github.com/qltysh/support/issues/7#issuecomment-2644144800