Add action info to unit struct
Split from (or: beginning of) #48685
Add action information to the unit structure. It's not kept always correct within this ticket - no savegame handling, passing the action information uses dummy values in a number of places, etc.
Split from (or: beginning of) #48685
Add action information to the unit structure. It's not kept always correct within this ticket - no savegame handling, passing the action information uses dummy values in a number of places, etc.