fix: ignore flow translation

[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

---

Create a ignoreHelper to be the adapter with the ignore module
It stores ignore instances per ignore file path (destructive and additive)
Make the ignore instances map static and use lazy loading to build it
Refactor repoGitDiff using the new ignoreHelper
Use the new helper in the flowTranslationProcessor module

Does this close any currently open issues?

---

closes #359

• Jest test added to check the fix is applied.

[codecov]

Codecov Report

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

Coverage data is based on head (5463169) compared to base (263e37d).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #360   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           29        30    +1     
  Lines          735       767   +32     
=========================================
+ Hits           735       767   +32     

Impacted Files	Coverage Δ
src/post-processor/flowTranslationProcessor.js	100.00% <100.00%> (ø)
src/post-processor/postProcessorManager.js	100.00% <100.00%> (ø)
src/utils/fsHelper.js	100.00% <100.00%> (ø)
src/utils/ignoreHelper.js	100.00% <100.00%> (ø)
src/utils/repoGitDiff.js	100.00% <100.00%> (ø)

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[codeclimate]

Code Climate has analyzed commit 5463169 and detected 0 issues on this pull request.

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[mehdicherf]

LGTM