graphql-engine/server/benchmarks/benchmark_sets/chinook

This is the classic chinook data set, which simulates a simple digital media store; with dozen or so tables, some simple relationships, and (depending on the table) a few dozen to a few hundred rows of realistic data per table.

Additionally it has been enriched with some sensible permissions on two new roles: employee, and customer.

Selected for inclusion because it's understandable, standard, familiar and somewhat realistic.