useTransition support

[samdenty]

useTransition is the hook that allows for non flashy UI transitions.

Currently facebook/react#17199 means it's impossible to detect during render whether a component has a useTransition, and whether or not it's pending.

Somehow we need to signal to the gqless react binding not to throw a promise (both hook & HoC), when it's pending, AKA:

const { something } = useQuery();
const [startTransition, isPending] = unstable_useTransition({
	timeoutMs: 3000
});

if (isPending) {
  doNotThrowPromiseAndJustRenderWithOldData()
}

This should uphold the concurrent mode guarantees, at least for loading states.

ways I can think of to do this:

• gqless provides it's own wrapped useTransition
  • this won't work with third-party libraries that use the real one
• gqless overwrites useTransition and inserts logic to check for the pending state
  • we would need to do this at the start of the application, import("@gqless/react").enableTransitions() (would be graceful)