Ignore EmptyResourceFileError for index files/patterns

[chronark]

I settled on a pattern similar to this for my collections and indices

// resources/collections/accounts.ts
import {CreateCollection} from "faunadb"

export const COLLECTION_ACCOUNTS = "accounts"
export default CreateCollection({name: COLLECTION_ACCOUNTS})

// resources/index.ts
export * from "./collections/accounts"
// ...

// somewhere else
import {COLLECTION_ACCOUNTS} from "@<project>/fauna"
// .. do something with it

I do that because I ran into problems because I could not keep my naming consistent.

Anyways, fauna-schema-migrate detects the index.ts file and obviously does not see a default export and it throws the EmptyResourceFileError. A workaround would be to create the index.ts outside of resources but it would be nice to maybe add a flag to ignore index files or even better patterns of files.

Let me know what you think and I can create a PR.

[fauna-brecht]

Sounds god, I would opt to add an 'ignore' option in the config which can contain wildcards in a similar vein as gitignores.