Benchmark: replace shell scripts with JS code (#1470)
Benchmark: replace shell scripts with JS code (#1470)

In order to have a better discussion around #1463 we need to add benchmarks for `validate` and `validateSDL`. I split out refactoring part into this PR.
enaqx/graphql-js,enaqx/graphql-js,graphql/graphql-js,jjergus/graphql-js,jjergus/graphql-js,enaqx/graphql-js,graphql/graphql-js,graphql/graphql-js