Add a SMART connector script

[rudokemper]

Goal

Towards (but does not close) #191. Another PR forthcoming.

What I changed and why

• Created a real export fixture from SMART Desktop + Mobile.
• Added a smart_patrols.py script that takes a SMART patrol export XML file and parses it to make a clean dataset of observation records in GeoJSON format.
• Leverage the usual pattern for geospatial data of saving the original (XML) file, saving a GeoJSON-transformed version, and calling save_geojson_to_postgres to save to db.

Should be straightforward for review.

What I'm not doing here

Adapting the Dataset Uploader App to allow you to upload this file. That is coming in a next PR.

LLM use disclosure

Supervised test generation with cursor.

[IamJeffG]

my only question is what sort of heterogeneity might appear in terms of the schema (mostly the set of fields) of smart XML files? And is this script special-cased to the one example we have?

[rudokemper]

Pretty hard to say, honestly. I did export three XMLs to be sure, and all of these fields appeared in them (they are required fields when "starting a patrol"). But SMART is a complex toolchain and it would not surprise me if there are divergences. That said, there is NO documentation about their data structures so it's tricky to know without more samples. I vote that we deal with that when the script gets some usage from XML exports generated in the wild.