Fixes should adhere to `artifactDirectory` configured in `relay.config.js`

[reckter]

Currently, you can switch between imports being auto fixed either:
haste: true => "<type>.graphql"
haste: false => "./__generated__/<type>.graphql".
But with artifactDirectory set it would probably need to be:

• the relative path from the current directory to the artifactDirectory
• or the absolute path from the baseUrl setting in tsconfig (which is not always possible, because either not set, or not a ts repository at all)