Allow to connect multiple stores in the shopify_product plugin

[mattiatelevation]

Hey my name is Mattias Bylin, we have the need to add multiplestore products into the same dato instance and I wondered if your intrested in adding this feature? I could work on it if its something your intrested in.

[marcelofinamorvieira]

Sure @mattiatelevation, if you'd like you can fork the plugin and make your own private instance with that feature, or you can submit a PR to it and we can hopefully merge it as an addition :)