Adding Region and City level data

[nickarnold]

It would be nice to have the region (or regionCode) and city level data tracked by this script to give users a bit more granularity in the data that Counterscale makes available about visitors. According to the documentation these fields should be available to us in the incoming request object. It looks like it'd be pretty easy to simply add these fields to the schema, modify the collect script and then have this new information ready to surface in a forthcoming UI-focused PR to expose it to the UI.

@benvinegar Any thoughts on this? Opposition? I realize there's a fine balance between filling up the limited 'blobs' that CF makes available and having a useful and minimally-invasive tracker. It seems like region and city isn't too specific to malign with the lightweight and privacy-respecting goals here.

I'd rather make the change here for everyone rather than maintain a fork. Also, thanks for this! It's been very useful for a small handful of my projects.