[New Feature] Custom deployment command

[NetsuNegi]

Description:

In Yuri's Revenge, if unit has passengers flag, that means when it deployed it only can unload passenders and can't do other things. Maybe some unit need to do other things when it deployed, like convert, use weapons or to land etc.

Possible Implementation:

In rulesmd.ini
[SOMEVEHICLE]
Deploy.Command=unload ; def = unload, other values: fire, convert, toland.