Solar farms and salt ponds

Important Satellite Eyes update! I've added solar farms, salt ponds and mines to the 'Interesting Sights' rotation. I've had this on for a few days to get a feel for it and I think it's turned out pretty nice.

I used OpenStreetMap to find the locations, sorted by the largest area first, on the assumption those look the most impressive. It was a bit much for the Overpass Turbo API, which kept timing out, so I ended up downloading the entire planet file and using DuckDB's handy OSM extension to query it directly. Every time I use DuckDB I love it.

Unfortunately, in 2.0.0 I broke the auto-update mechanism, so the only way to update is by hand. Luckily if you try and auto-update it will still show the release notes, so I've shoved some instructions in there.