create container tests for CI

[pyramation]

https://docs.github.com/en/actions/using-containerized-services/creating-postgresql-service-containers

[pyramation]

w/matrices https://github.com/actions/setup-python

[pyramation]

one idea is to add launchql cli, and do a lql dump command

      - name: lql
        run: npm install -g @launchql/cli

$ lql
? [cmd] what do you want to do? dump
? [deps] dump all dependencies too? Yes
? [project] choose a project ast
? [path] choose a name dump

then I believe we could see a database, and then use this one as the template database, potentially