Configure database via DEKART_POSTGRES_URL

[christippett]

Added an option to configure PostgreSQL by passing the connection string as an environment variable.

e.g.

DEKART_POSTGRES_URL=postgres://user:pass@hostname:5432/dekart?sslmode=verify-full

This would be an optional alternative to setting individual parameters under the DEKART_POSTGRES_* environment variables.

My motivation for making this change was to get Dekart working with a serverless Postgres instance from Neon, but having sslmode=disable hardcoded in the connection string caused issues. By adding an option to provide the whole connection string via DEKART_POSTGRES_URL meant I could set sslmode=verify-full after which everything worked fine.

[delfrrr]

Makes total sense, thank you, @christippett

[delfrrr]

Hey, @christippett, join our Slack, will be happy chatting with you and having your feedback! I also communicate there plans for next releases and road map overall.