fix: empty inFile metadata file generation when nothing scopable changed

[scolladon]

Explain your changes

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Ensure to write metadata file when it has content even if nothing "scopable" is changed.
And still ensure it will not write empty metadata file when something has been removed from the file and the content is empty

Does this close any currently open issues?

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closes #679

• Jest tests added to cover the fix.
• NUT tests added to cover the fix.
• E2E tests added to cover the fix.

Any particular element that can be tested locally

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Any other comments

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[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (561fd48) 100.00% compared to head (e65d5ed) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #680   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           34        34           
  Lines          948       952    +4     
=========================================
+ Hits           948       952    +4     

Files Changed	Coverage Δ
src/service/ObjectTranslationHandler.js	100.00% <100.00%> (ø)
src/service/inFileHandler.js	100.00% <100.00%> (ø)
src/utils/fxpHelper.js	100.00% <100.00%> (ø)
src/utils/metadataDiff.js	100.00% <100.00%> (ø)

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[codeclimate]

Code Climate has analyzed commit e65d5ed and detected 0 issues on this pull request.

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[github-actions]

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