Support for globs

[jens1101]

Currently we have multiple GraphQL files in our source code and I need to run this for each file individually. It would be much more convenient if globs were supported. Then I could run something like:

npx format-graphql --write=true ./src/**/*.graphql

[gajus]

If you are using lint-staged, then you can already do that:

https://github.com/okonet/lint-staged#example-wrap-filenames-in-single-quotes-and-run-once-per-file