New MMM-CTA Module for Chicago Transit

[JHWelch]

I created a new MMM-CTA for Chicago Transit. I was inspired by the one from NateDee, but it had not been updated in a while.

The big difference in my version is that you can pass an array of stops instead of just a single train or bus stop, so you can display as many stops as you want in a single widget.

I plan on continuing work and maintenance on this, it is set up with a test suite & CI tooling to make it easy to accept contributions and continue maintaining. Please let me know if there is anything you’d like to see or if you run into any problems!