Modernise the project, using Vite

[ajmas]

It would be good to update the project using a packaging system such as Vite, to facilitate maintenance.

I have already started my own fork in this direction:

https://github.com/ajmas/StuffInSpace/tree/modernisation

This code includes a number of other changes, so I am not sure how best to contribute it back at this point.

[ajmas]

I have done a lot more work since opening this ticket. Feel free to fork the work I did and commit back to my fork:

https://github.com/ajmas/StuffInSpace

I'd like to see this evolve.

Note, there are other forks and related projects to look at, so consider them if you want something more sophisticated, such as https://github.com/thkruz/keeptrack.space