add release-it

[pamapa]

Tag and commit message will be v${version}. We start without --version-only, which allows to confirms every step (commit+tag+push). I do explicitly not publish in npm registry and release in github. The npm publish shall be done via CI and the github release manually via github page.

Closes/fixes #272

Checklist

• [ ] This PR makes changes to the public API
• [x] I have included links for closing relevant issue numbers

[codecov[bot]]

Codecov Report

Merging #308 (10329f2) into main (02733aa) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #308   +/-   ##
=======================================
  Coverage   75.94%   75.94%           
=======================================
  Files          42       42           
  Lines        1538     1538           
  Branches      282      282           
=======================================
  Hits         1168     1168           
  Misses        341      341           
  Partials       29       29           

Flag	Coverage Δ
unittests	75.94% <ø> (ø)

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