Add ability to configure via dot file .graphql-schema-linter

[cjoudrey]

Rather than have to always configure the linter via command line options, it could be useful to have a dot file at the root of a project to configure what rules should be used.

[goldcaddy77]

Per our convos, we should also consider a package.json config key to avoid cluttering the project's root folder.

[cjoudrey]

I wasn't aware this was something people were doing now. I wouldn't mind support that too if it's a convention people have been adopting.

[goldcaddy77]

There have been a lot of discussions lately, especially on the prettier project:

• Is there a way to set global configuration? prettier/prettier#98
• [RFC] Implement cosmiconfig for workspace configuration prettier/prettier#2434

A number of projects have started using cosmiconfig project to do the config management.

[cjoudrey]

TIL -- Thanks for sharing those links @goldcaddy77. I wouldn't mind using cosmicconfig.

I think we should support .graphqlconfig too as per #1.

[cjoudrey]

This was fixed by #26