Enable Mingo-based queries in client

[andrewxhill]

There might be a technical blocker to why mingo was only used to support queries on the Database but not on the Client. Client appears to only support the QueryJSON (and Where constructor).

Leaving this for @carsonfarmer return

[carsonfarmer]

This is currently pretty non-trivial, because the query format on the remotes in not particularly compatible with mingo/mongo query functions. It would require significant mapping between the two. I'd rather just "wait" until we have our local-first implementation, then mongo-style queries will just be done on the local copy by default.

[carsonfarmer]

Closing this as "wont fix" in favor of more "native" queries as part of The Great Refactor (#414) work.