fix: readDir git based implementation

[scolladon]

What does this pull request contain?

---

• Added (for new features).
• Changed (for changes in existing functionality).
• Deprecated (for soon-to-be removed features).
• Removed (for now removed features).
• Fixed (for any bug fixes).
• Security (for vulnerability fixes).

Explain your changes

---

Fix home made git based readDir implementation and usage

fs.readdir returns a fs.Dirent data structure which tell us if the element is a folder or a file.
Using git to explore folder content returns string.
A element is a folder if it ends with '/'
Some part of the code relied on not having this slash at the end of a file.

Fix config parameter in fsHelper
Improve error handling in fsHelper

Does this close any currently open issues?

---

closes #413
closes #414
closes #416

• Jest test added to check the fix is applied.

Any particular element that can be tested locally

---

Build a lwc component with subfolder (for test for example), modify the js file, check all the content of the module (even sub folder) is copied to output

This playground can be used as well
This branch in our playground can be used as well

Any other comments

---

[codeclimate]

Code Climate has analyzed commit fa144a2 and detected 0 issues on this pull request.

View more on Code Climate.

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (fa144a2) compared to base (09405d3).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #419   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           31        31           
  Lines          815       814    -1     
=========================================
- Hits           815       814    -1     

Impacted Files	Coverage Δ
src/post-processor/flowTranslationProcessor.js	100.00% <100.00%> (ø)
src/service/customObjectHandler.js	100.00% <100.00%> (ø)
src/service/inFolderHandler.js	100.00% <100.00%> (ø)
src/service/inResourceHandler.js	100.00% <100.00%> (ø)
src/service/standardHandler.js	100.00% <100.00%> (ø)
src/utils/fsHelper.js	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.