♻️ webserver: fixes mypy issues in publications plugin

[pcrespov]

What do these changes do?

• ♻️ refactors publications plugin in webserver
  • plugin under publications folder
  • protected internal modules and defined interface
  • renamed _logger
  • reviewed TODO annotations

Related issue/s

• part of Maintenance: make mypy pass in all services/packages in repo #4071

How to test

cd services/web/server
make mypy | grep publications
pytest -vv tests/**/test_*publications*.py

[codeclimate]

Code Climate has analyzed commit 8e9e924 and detected 0 issues on this pull request.

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #4238 (8e9e924) into master (0b34859) will increase coverage by 3.4%.
The diff coverage is 85.1%.

@@           Coverage Diff            @@
##           master   #4238     +/-   ##
========================================
+ Coverage    82.6%   86.0%   +3.4%     
========================================
  Files         868     798     -70     
  Lines       38483   35699   -2784     
  Branches      583     545     -38     
========================================
- Hits        31808   30732   -1076     
+ Misses       6539    4837   -1702     
+ Partials      136     130      -6     

Flag	Coverage Δ
integrationtests	68.7% <77.2%> (+15.3%)	⬆️
unittests	82.3% <85.1%> (+0.4%)	⬆️

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

Impacted Files	Coverage Δ
...imcore_service_webserver/publications/_handlers.py	33.3% <66.6%> (ø)
...rvice-library/src/servicelib/mimetype_constants.py	100.0% <100.0%> (ø)
...erver/src/simcore_service_webserver/application.py	97.8% <100.0%> (ø)
.../src/simcore_service_webserver/login/_constants.py	100.0% <100.0%> (ø)
...c/simcore_service_webserver/publications/plugin.py	100.0% <100.0%> (ø)

... and 331 files with indirect coverage changes