GitHub Actions automation for release and CI

[leonhma]

This PR adds some niceness to the CI workflow, organizes the scripts in package.json to be more time efficient when running, and most importantly: It adds an entire release workflow!

The release workflow runs when a tag is created and uses the name of this tag as the package version (creating the release 1.30.3 publishes the new package under version 1.30.3). To use this, create a npm automation token and add it to the secrets as NPM_TOKEN. Everytime a new release is made, site.js, cp dist/function-plot.js site/js/function-plot.js and typedoc ... are run, and the site is deployed to the GitHub Pages branch.

[leonhma]

Okay thats a bit stupid to have the first 4 commits included. Should I just merge this into the other PR?

[leonhma]

Wrote some comments. What could be done is to add a source map (including the sources) in the prod output.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.