Add package.json and README documentation for an additional method to install libraries

Taking a look at MidCamp 2025

I updated the MR with a first pass at the Highcharts libraries. Let's refine Highcharts and then we can duplicate the effort for the other library options!

andileco mentioned that the install hooks are checking for these in the `/libraries` dir in the webroot. Instead of `[submodule/dist/js` we will want to match those paths to the `/libraries` dir.

Thank you for getting this started, @tommasorandazzo! The video of the presentation is up: https://youtu.be/irKVKHPSWZ4?si=OrASg2ELCrJ3SLPv&t=2014