`client:check` should check against local schema files

I'm running `apollo client:check` with a `localSchemaFile` set in my `apollo.config.js`, and `apollo` is still asking me for an `APOLLO_KEY` and a graph ID. Is this intended behavior, and support for local schema checks haven't been added yet?

Start with the `client:check` command and how it reads `apollo.config.js`, especially the `localSchemaFile` setting. Reproduce the command with a local schema and confirm when it asks for `APOLLO_KEY` and a graph ID. Done means local schema checks run without requiring those registry credentials when `localSchemaFile` is configured.

Written by the indexing model from the issue text.