Create a dev data script that populates the app with some reasonable defaults to speed up dev

[brassy-endomorph]

Is your feature request related to a problem? Please describe.

I want the app to be fully usable with one command so that I can test UI features or styling without having to manually click a bunch of things or run a bunch of CLI commands to get the app into a "normal production state."

Describe the solution you'd like

We should have one dev_data.py that assumes an empty migrated database and adds a few entries of all possible types. This should be outside the normal source directory so that it's not accidentally packaged and distributed in python packages, docker container, etc.

Describe alternatives you've considered

Clicking buttons, but I hate that. I guess also a SQL script that just gets exec'd, but that is much more tedious and brittle, and it would be harder to read than Python.

[glenn-sorrentino]

I believe this has been addressed, @brassy-endomorph