Mock device websocket for storybook #23
Description
Various beamline device controller components and live plot monitors rely on ophyd websocket for functionality. If we put the components in storybook without a mock device then there is no functionality and it will default to a 'device not connected' view.
Add a custom hook that recreates the functionality of useOphydSocket with pure js so components can be instantiated with it and then rendered to storybook.