How to install fullCalendar in apps script?

I’m currently developing a web app with Google Apps Script using server side JavaScript & client side HTML & JavaScript. The available Google Calendar class lacks all my required features so I’m using an external library. I am not experienced in using JavaScript 3rd party libraries and uncertain how to install the fullCalendar library. It appears as though I’d have to install through a zip folder but I don’t believe that is possible in Google Apps Script as there is no way to download and extract the setup. I started with python and know I can I host a self developed package for install through pip/conda but I don’t know how to do that with JavaScript.

https://fullcalendar.io/docs/initialize-globals

https://fullcalendar.io/docs/initialize-es6

How can I install this in Apps Script?

If I can’t install it directly in Apps Script, is there somewhere I can freely host the unzipped files to install from?
Is there a way to install fullCalendar in regular javascript besides downloading a zip folder?