Change ResourcesAnalyzer API so that constructor takes top-level props

Not props.parentResources, as at present, as that presumes up front that we're using stripes-connect. When GraphQL is in use, we'll be using props.parentData instead, so we need to have both available. (Also, we may well need props.parentMutators, too, when we come to do the CUD parts of the stripes-connect version.)