Adapt import routine for Styx Data.

Add additional method to readCrnsDataHi.R ->

setGeneric(name = "readCrnsDataStyx",
                    def = function(file, type="sm", ...) #, timeInterval, crnsCoordinates)
                    {
                              standardGeneric("readCrnsDataHI")
                    }
)

setMethod(f = "readCrnsDataStyx",
                    signature = "tbl_df",
                    definition = function(file,
...