Implement suspense on useQuery

[lstanden]

I'm attempting to migrate from react-apollo-hooks to @apollo/react-hooks and running into a bunch of issues due to the missing Suspense support. It would be great if the suspense flag could be incorporated.

For context, suspense simply means that the {loading} state is irrelevant, and the useQuery call will throw a promise in the event a query has not finished executing.

[zicodeng]

Feature request here: apollographql/apollo-feature-requests#162, but it hasn't attracted much attention 😞

[hwillson]

Let's continue the discussion over in apollographql/apollo-feature-requests#162 (but in a nutshell: we're waiting for the React team to finalize suspense + data fetching support before getting it implemented).