Support async getQuery

[taion]

Follow-up feature request from #294

[jquense]

isn't this better solved by persistent queries?

[taion]

Probably.

[dminkovsky]

I don't know, I liked your reasoning. I think I was mislead by the apparent tidiness of keeping the query with the module. If this capability existed, it would have lead me down the wrong path?

[taion]

Yeah, we probably don't want to do anything here. It probably makes sense to use persistent queries and only send up the query hash, in cases where we want to omit the weight of queries from the main bundle.