Include all updated plotting option from SolarMACH.plot() also in SolarMACH.plot_pfss() #90
Description
The default plotting function SolarMACH.plot() has been updated with new options over time, which have not yet been transferred to SolarMACH.plot_pfss(). Because the latter started as a copy of the earlier one, most of this options would also work there. They just need to be copied over.