cdp-instances, a repo to simply store the config details for active instances

[evamaxfield]

Idea / Feature

A single repo that stores the configs and details for instances.

Use Case / User Story

This is valuable to publish in both Python and JavaScript.
In JavaScript, it would make it easier to manage the /instances route on the councildataproject.org page. I.e. having all of the active instances in a single repo that is simply pulled into to other frontend libraries for quick access.

Same for Python. with https://github.com/councildataproject/cdp-data / #3 it would be valuable to have a repo that we can pull in that has all the configs for the various instances.

Other Notes

It might make sense like CouncilDataProject/cdp-backend#167 to use some sort of code generation to handle this.

[isaacna]

We could also potentially add cross deployment queries if a user wants to consult multiple or all of the instances for a single query