Disallow certain entities in space

[Qatavin]

Pertains to #547

Adds surface_conditions to various entities where appropriate so they will not be able to be built in space or other inappropriate locations.

Burner assembly machine, burner electric generator and fluid burning generators, burner heat sources, stone and steel and fluid burning chemical/mixing furnaces, roboports of all kinds, and burner labs are all banned from airless environments.

Locomotives, cars, and tanks have added condition that blocks them from airless environments (previously they only had the gravity limitation) due to their burner engines. Spidertrons will also have the gravity requirement, and the ones with burner power sources (depending on the setting) will also require air pressure.

Blocked from 0g environments but not airless ones: greenhouse (an enclosed environment, so no air is okay, but plants don't grow well without gravity), chests/logistic chests, ground combat drones other than flamethrower drone (which also needs air)

Steam mining drill changed so that it is allowed to be used with no atmosphere.

There are also some weight modifications in there. I'm working on that too, mostly in a separate branch. It's badly needed, as some of the rocket capacity calculations are very odd if you let them be generated automatically.

[KiwiHawk]

As much as possible I think we should avoid checking for if Space Age mod is enabled. This will be better for mod compatibility.

Using surface conditions requires the space-travel feature flag to be enabled.

[Qatavin]

I suppose, if it works.

The freezing parts do need to be Space Age dependent, though, since they reference assets that are contained within the mod.