feat(react-query): add pause provider

[oblador]

This implements a pause provider according to proposal in #8574 which functions similar to subscribed prop, but to a whole tree and without redundant re-renders.

Not decided on the correct behaviour if subscribed option is true, currently it will ignore this, but probably it should not.

See provided example for usage, happy to flesh out docs and tests if you think this is a viable approach.

I tried to use the examples/react/react-native project, but couldn't get it to start (probably because pnpm isn't compatible with RN).

This can easily be augmented with a more user friendly provider component along these lines:

export type PauseProviderProps = {
  paused: boolean
  children?: React.ReactNode
}

export const PauseProvider = ({
  paused,
  children,
}: PauseProviderProps): React.JSX.Element => {
  const pauseManager = React.useRef<PauseManager>(null)
  if (pauseManager.current === null) {
    pauseManager.current = new PauseManager(paused)
  }
  React.useEffect(() => {
    pauseManager.current?.setPaused(paused)
  }, [paused])
  return (
    <PauseManagerContext.Provider value={pauseManager}>
      {children}
    </PauseManagerContext.Provider>
  )
}