test: bench GraphQL

bench/run.ts has a GraphQL corpus, the files of target/corpus/graphql
that Prettier parses, which Prettier, oxfmt, bun fmt, Biome and dprint's
pretty_graphql format too. bench/parse times tidy's GraphQL parser
against oxc-graphql-parser, apollo-parser, cynic-parser, graphql-parser
and async-graphql-parser.