Fuel injector for powerplants and oil burner

[protocol-1903]

No description provided.

[protocol-1903]

Changes:

• Adjusted oil and gas powerplant fuel input to only connect to fuel injector
• Adjusted oil boiler to only connect to fuel injector
• Oil powerplant can only run on fuel oil combustion mixture, made from any of the following: diesel, kerosene, fuel oil, gasoline
• Gas pwoerplant can only be run on natural gas combustion mixture, made from any of the following: natural gas, refined natural gas, purified natural gas, pure natural gas
• All other fluids with a fuel value are converted into generic combustion mixture
• Oil burner can be powered via any combustion mixture
• No fuel value is lost when using the fuel injector

The following are subject to change for balance or other reasons:

• Fuel injector graphics, size, and fluid connection placement
• Powerplant fluid connection placement
• Fuel injector crafting speed

The following have not yet been implemented:

• Localisation
• Fuel injector graphics
• Fuel injector recipe (currently unobtainable in regular gameplay)
• Fuel injector byproducts

Notes:

• Pipes and other methods of fluid logistics cannot connect to fuel injectors or powerplant inputs. This is intentional
• Combustion mixture icons are not going to all be the same

[FreezingSnail]

The ratio of many (or all) of the comb buster mixtures do not maintain a 1:1 fuel value.
Since all the inputs are 10, it is easy to calculate -> in(fuel value in MJ) = out amount, fv *10 (in mj)
Small helper so don't need to look up each fuel value for each fluid one at a time and an example of it in use:

function fuelMJRatio(fuelvalue)
    local raw = tonumber(fuelvalue:sub(1, -3))
    if fuelvalue:find("MJ") then
        return 10*raw
    else
        return 10*raw/1000
    end
end

RECIPE{
    type = "recipe",
    name = "crude-oil-combustion-mixture",
    energy_required = 0.1,
    enabled = true,
    hidden = false,
    ingredients = {{ type = "fluid", name = "crude-oil", amount = 10}},
    results = {
        { type = "fluid", name = "combustion-mixture1", 
        amount = fuelMJRatio(FLUID["crude-oil"].fuel_value)
    }},
    category = "py-fuel-injector"
}

Another example,
coal gas is 200kj, so this output is much too high:

ingredients = {{ type = "fluid", name = "coal-gas", amount = 10}},
results = {{ type = "fluid", name = "combustion-mixture1", amount = 45}},

10 -> 2 comb

[FreezingSnail]

Another note on if methane should be allowed in a nat gas plant:
https://en.wikipedia.org/wiki/Coalbed_methane
coalbed gas should be included too probably