LogisticElectricFurnace

Adds an Electric Furnace to Factorio that connects to the BotNet

-- furnace

craftable furnace - done

request resources (20 iron, 20 copper, 20 stone by default)

smelt requested resources

iron and copper (3.5 energy)
steel from 5 iron ore (21 energy)
stone (3.5 energy)

provide resources

--gui

set auto-smelt limits

sort limits by player preference (iron, copper, steel, bricks)

make a level 2 that smelts 2 items (upgraded from mk1)

make a level 3 that smelts 4 items at once (upgraded from mk2)