Fix: Enhance zipped submissions support - follow up

[syphax-bouazzouni]

This PR is a fork of @alexskr solution (#172), handling the remaining the not passing test of #144

This iteration uses zlib module, to unzip Gz files (it seems zip module does not handle it).

Thanks, @alexskr for contributing to this.

[codecov[bot]]

Codecov Report

Merging #174 (299a01c) into develop (e33a0e4) will increase coverage by 0.04%. The diff coverage is 87.50%.

@@             Coverage Diff             @@
##           develop     #174      +/-   ##
===========================================
+ Coverage    80.75%   80.80%   +0.04%     
===========================================
  Files           63       63              
  Lines         4901     4907       +6     
===========================================
+ Hits          3958     3965       +7     
+ Misses         943      942       -1     

Flag	Coverage Δ
unittests	80.80% <87.50%> (+0.04%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
lib/ontologies_linked_data/utils/file.rb	75.22% <87.50%> (+2.32%)	:arrow_up: