[New Feature] Auto Place Building

[LastRemoteAR]

Description:
Auto place a building when it finishes its building progress without need of player to choose where to place.

Code:
[SomeBuildingType]
Placement=normal ;placement option

Possible Value:
normal: default value, need player to choose where to place building
virtual: This buildingType does not need to be at anywhere on the map but exists in game ,providing prerequisites ,superweapons or other features which does not need being on map.
ai: let ai choose where to place
random: randomly choose placement on map, ignoring basenormal
offmap: random place out of map border(Maybe like paratroop plane spawning), thus it can still fire weapons. Should not be a legal target.