If you have 30 amp shore power then either the Victron Energy PMP123021102 Multi Plus 12/3000/120-50 120V VE Bus Inverter/Charger or the latest version Victron Energy PMP122305120 MultiPlus-II 12/3000/120-50 120V inverter/charger
will do. They are almost functionally identical but the MultiPlus II is tall and slender whereas the original is short and squat.
If you have 50 amp 120/240 volt shore power you might prefer the MultiPlus-II 12/3000/120-50 2x120V Inverter/Charger because it can provide power to both 120 volt legs