Example: Opening a focus position on startup

This example demonstrates using the Constants.STARTUP_SKIP_VIEWS startup option to be able to set a focus position on viewer start, while also having access to a Promise that indicates success or failure. When using this startup option, the SDK integrator is expected to call setFocusPosition or setFocusPositionWithOption after the workspace has opened.

It was introduced because using Constants.STARTUP_FOCUS_POSITION does the same, but does not allow the SDK user to know if this is successsful.