construction placement structureType conditions

[CarsonBurke]

• for some structureTypes have a function ran for each attempt to place a construction site
• for towers, check if we are near safemode end
• for terminal, check if we have another rcl 6 room
• for factory, check if we have another rcl 7 or sufficient commodities
• for labs, check if we have sufficient minerals to justify boost production and use (enough in storage)
• for power spawn, check if we have sufficient power