Better and more extensive logging with proper logging levels, also new env variables are created to control those.
Reviewed-on: anthrove/e621-to-graph#16
Reviewed-by: Lennard Brinkhaus <lennard.brinkhaus@noreply.localhost>
Co-authored-by: Fenpaws <soxx@fenpa.ws>
Co-committed-by: Fenpaws <soxx@fenpa.ws>
