AAI Loaders: Electric power

Makes all loaders created by Earendel's AAI Loaders mod
powered via electricity rather than being free or requiring lubricant

Details

AAI Loaders mod is forced into "expensive" unlubricated mode,
to make sure its lubricant supply scripting won't even try to run.
Unlubricated recipes adjusted to cost roughly 5 times less. Powering with electricity
is itself simpler than supplying lubricant, so making loaders roughly 2 times more
expensive than lubricant mode looks fair enough
All loaders now use Factorio's native energy system via "energy_source" property.
This makes them run at native speeds. No scripting.
Base cost of each item transported is 6kJ, yet it lowers slightly with each speed
tier above 15 items/s. As a result, normal loader is 92kW, fast is ~166kW and express is ~225kW.

Loaders description says they have no cost. This is because localization wasn't touched at all
Recipe adjustment logic is very primitive, so may not always play as desired
Power consumption graph looks like buzzsaw because loader consumes power not steadily every tick but when item is transferred
Max power consumption is shown incorrectly; yellow loader would show it as 722kW while it should've been 92kW. This is probably because consumption is computed like 2 items are transferred per tick, which results in 60 ticks * 2 lanes * power-per-item. The real median consumption is 92kW for yellow loader - 15IPS * 6kJPI + 2kW drain