fix: sub directory detection when walking vcs content

[scolladon]

Explain your changes

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Use the existing subDir algorithm instead of the local sibling folder detection

Does this close any currently open issues?

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closes #878

• [X] Jest tests added to cover the fix.

Any particular element that can be tested locally

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use --source parameter with '.' value

[codeclimate[bot]]

Code Climate has analyzed commit 99c20f3b and detected 0 issues on this pull request.

View more on Code Climate.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (eb5a47b) to head (99c20f3).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #880 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 39 39 Lines 1067 1067 Branches 114 114 ========================================= Hits 1067 1067 ```

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[scolladon]

Could you help here by testing this version please @jdkgabri ? You can follow those steps to test locally the current version

[jdkgabri]

Could you help here by testing this version please @jdkgabri ? You can follow those steps to test locally the current version

I can confirm this branch works properly! thanks for the fix!

[github-actions[bot]]

Shipped in release v5.40.1. You can install the new version using the version number or the latest-rc channel

$ sfdx plugins:install sfdx-git-delta@latest-rc
$ sfdx plugins:install sfdx-git-delta@v5.40.1

Happy incremental deployment!