Put Repo interface into package store?

[dingweihua]

Should we put the Repo interface (https://github.com/kott/go-service-example/blob/main/pkg/services/articles/article.go#L8) into package store (https://github.com/kott/go-service-example/blob/main/pkg/services/articles/store/repo.go)?

I think the updated hierarchy would be more clear.

Thanks!