feat: initial scrapy, actions setup

[pjsier]

I adapted a lot of this from City-Bureau/city-scrapers, but this should give us a decent starting point for writing scrapers and running them on GitHub Actions. We'll want to disable GitHub Actions on the repo for now while this is still a dummy spider

I realized I wasn't sure what data we want for each item, so this is mostly initial guesses

• Sets up poetry for dependency management on Python 3.9
• Sets up a basic scrapy project that doesn't currently write anywhere
• Initial scrapy item with some validation built in
• Adds a basic scraper and test file