WIP apollo-client v4

[PowerKiKi]

Work in process to migrate to the future apollo-client v4 and its native RxJS support via apollographql/apollo-client#12384

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[jerelmiller]

@PowerKiKi FYI we released a codemod with Apollo Client 4.0 that I think might be useful to you here. It not only updates the import locations, but will update to the new types as well (i.e. FetchResult -> ApolloLink.Result, etc.). See running it here: https://www.apollographql.com/docs/react/migrating/apollo-client-4-migration#running-the-codemod

[jerelmiller]

FYI ObservableQuery implements the InteropObservable interface, so you should be able to simplify this to:

import { from } from "rxjs";

// ...

return from(obsQuery);