♻️ webserver: fixes mypy issues in email plugin

[matusdrobuliak66]

What do these changes do?

• ♻️ refactors email plugin in webserver:

Related issue/s

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

How to test

cd services/web/server
make mypy | grep email

DevOps Checklist

[codecov]

Codecov Report

Merging #4198 (3716b36) into master (109de05) will decrease coverage by 2.1%.
The diff coverage is 100.0%.

@@            Coverage Diff            @@
##           master   #4198      +/-   ##
=========================================
- Coverage    85.5%   83.4%    -2.1%     
=========================================
  Files         961     381     -580     
  Lines       41640   19555   -22085     
  Branches      955       0     -955     
=========================================
- Hits        35622   16321   -19301     
+ Misses       5801    3234    -2567     
+ Partials      217       0     -217     

Flag	Coverage Δ
integrationtests	66.7% <100.0%> (-0.7%)	⬇️
unittests	83.9% <100.0%> (+1.5%)	⬆️

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

Impacted Files	Coverage Δ
...erver/src/simcore_service_webserver/application.py	97.8% <100.0%> (ø)
...erver/src/simcore_service_webserver/email/_core.py	82.3% <100.0%> (ø)
...r/src/simcore_service_webserver/email/_handlers.py	91.6% <100.0%> (ø)
...rver/src/simcore_service_webserver/email/plugin.py	93.7% <100.0%> (ø)
...er/src/simcore_service_webserver/email/settings.py	100.0% <100.0%> (ø)
...erver/src/simcore_service_webserver/email/utils.py	100.0% <100.0%> (ø)
...rver/src/simcore_service_webserver/login/plugin.py	90.0% <100.0%> (ø)
...src/simcore_service_webserver/login/utils_email.py	87.5% <100.0%> (ø)
...rver/src/simcore_service_webserver/publications.py	100.0% <100.0%> (ø)

... and 660 files with indirect coverage changes

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codeclimate]

Code Climate has analyzed commit 3716b36 and detected 0 issues on this pull request.

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