Cover auth failure case before It looks like there are 0 files associated with this Apollo Project.

[jsoref]

We have a graphql endpoint that requires authorization, when we properly pass --header "Authorization: Bearer ..." to apollo client:download-schema, things work nicely. When we don't, we get:

⚠️ It looks like there are 0 files associated with this Apollo Project. This may be because you don't have any files yet, or your includes/excludes fields are configured incorrectly, and Apollo can't find your files. For help configuring Apollo projects, see this guide: https://go.apollo.dev/t/config

apollo-tooling/packages/apollo-language-server/src/project/client.ts

Lines 138 to 141 in a778ca1

	"⚠️ It looks like there are 0 files associated with this Apollo Project. " +
	"This may be because you don't have any files yet, or your includes/excludes " +
	"fields are configured incorrectly, and Apollo can't find your files. " +
	"For help configuring Apollo projects, see this guide: https://go.apollo.dev/t/config"

This is fairly misleading/confusing and has resulted in myself and others wasting a lot of time trying to figure out if something else was wrong.

If apollo encounters a 4xx series error (especially 400/401), it'd be really helpful if it reported the url and error instead of just providing the current output.