Add welding fuel to chem dispensers

[aft2001]

Well, I'd support this but only if chemical reactions took time to happen, due to mass production without the time limits. For example, when mixing space drugs, it'd take about a second for 5 units to be made. Space drugs isn't dangerous, but can be easily made into Neurotoxin. And when neurotoxin is heated to its reaction point, it should take 2 seconds for 5 units to be made.