refactor: use simple babel config and drop babel runtime

[TrySound]

What:

With modern node there is no need for transpilation (except esm to commonjs) and having babel/runtime dependency gives nothing as it's not used by generated code as well. In this diff I replaced kcd-scripts babel config with simple commons plugin for tests. Published code stays the same and unsupported node versions should be caught by tests. Babel runtime is not necessary anymore as dependency.

Why:

How:

Checklist:

• [ ] Documentation
• [ ] Tests
• [x] Ready to be merged

[TrySound]

cc @conartist6

[codecov[bot]]

Codecov Report

Merging #185 (016961e) into main (7f3bdec) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #185   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            1         1           
  Lines          131       131           
  Branches        39        39           
=========================================
  Hits           131       131           

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[conartist6]

Remove the module transform plugin too and all of babel. You're not using the files it's generating. I'd remove the build script as well (if it no longer does anything useful) and remove the gitignore and any other ignores on dist.

[TrySound]

Don't see transform-runtime plugin though found commonjs pluginn from babel6