New release workflow and Actions update

[c4deszes]

Brief

• Requirements have been moved into setup.py as extras_require.
• Release workflow now uses tags as the trigger and release with changelog is automatically created.
• Actions have been updated to the latest versions.

Checklist

• [x] Add relevant labels to the Pull Request
• [x] Review test results and code coverage
  • [ ] Review snapshot test results for deviations
• [x] Review code changes
  • [ ] Create relevant test scenarios
  • [ ] Update examples
  • [ ] Update JSON schema
• [ ] Update documentation
  • [ ] Update examples in README
• [ ] Update changelog
• [ ] Update version number

[codecov[bot]]

Codecov Report

Merging #101 (19b2094) into master (62fa583) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #101   +/-   ##
=======================================
  Coverage   95.77%   95.77%           
=======================================
  Files          13       13           
  Lines        1279     1279           
=======================================
  Hits         1225     1225           
  Misses         54       54           

Flag	Coverage Δ
3.10.0b1	95.77% <ø> (ø)
3.6	95.77% <ø> (ø)
3.7	95.77% <ø> (ø)
3.8	95.77% <ø> (ø)
3.9	95.77% <ø> (ø)
unittests	95.77% <ø> (ø)

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