FluidEnergySource additional fields

[KilJaeden]

1- there should be a temperature settings to allow temperature-based power generation, including min/max temp, base (at min temp) and per-degree energy amounts (like 100J perliquid at base temp and 5J per additional temperature degree per liquid unit)
2- instead of a single fluidbox input, the API should allow two arrays of input and output fluid boxes, allowing to consume and produce multiple liquids at different rates
3- steam engine/steam turbine/fusion generator/thrusters could be changed to use the updated fluid energy source

[MrSmoothieHuman]

+1 on it all, but i'd absolutely love even just the first one being actually implemented