feat(app): copy datasets feature

[frascuchon]

This PR addresses discussions from this issue

Dataset copy internally uses elasticsearch index clone, that requires source index in read-only mode. Logging records into a dataset that is being copied could lost data.

The clone index feature is include since version 7.4.x, so rubrix instances using older elasticsearch versions won't support this new feature

[codecov]

Codecov Report

Merging #263 (22f4276) into master (525d44a) will increase coverage by 0.24%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #263      +/-   ##
==========================================
+ Coverage   90.37%   90.62%   +0.24%     
==========================================
  Files          58       58              
  Lines        1819     1867      +48     
==========================================
+ Hits         1644     1692      +48     
  Misses        175      175              

Flag	Coverage Δ
pytest	90.62% <100.00%> (+0.24%)	⬆️

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

Impacted Files	Coverage Δ
src/rubrix/__init__.py	94.44% <100.00%> (+0.32%)	⬆️
src/rubrix/client/__init__.py	83.90% <100.00%> (+0.47%)	⬆️
src/rubrix/server/commons/errors.py	87.50% <100.00%> (+1.78%)	⬆️
src/rubrix/server/commons/es_wrapper.py	98.90% <100.00%> (+0.21%)	⬆️
src/rubrix/server/datasets/api.py	85.71% <100.00%> (+1.71%)	⬆️
src/rubrix/server/datasets/dao.py	92.30% <100.00%> (+0.52%)	⬆️
src/rubrix/server/datasets/model.py	100.00% <100.00%> (ø)
src/rubrix/server/datasets/service.py	89.23% <100.00%> (+2.19%)	⬆️

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[dcfidalgo]

Nice, LGTM! Just a few minor inline comments.

[dcfidalgo]

Perfecto