Program ReactiveFacileDataStore implementation up to FacileDataStore API

[lianos]

Currently we have an assumption that this is wrapping a FacileDataSet.

ReactiveFacileDataStore() and the chain of functions it delegates to that support it (filteredReactiveFacileDataStore() and reactiveFacileDataStore()) assume we are only working with FacileDataSets, which are loaded from the path on disk.

Now that we have FacileBiocData, we need to program up to the general FacileDataStore API so that they can be used as data providers to the shiny bits.

You'll know you've almost got it when this FacileAnalysis mojo work:

1. samples(FacileBiocDataStore) %>% fpca() %>% shine()
2. fpcaGadget(FacileBiocDataStore)
3. fdgeGadget(FacileBiocDataStore)