Continuous burning in burner

[Melfish]

Its me again tinkering with stuff I probably shouldn't...
In the spirit of replacing hacky implementations with actual API i have another request;

Reactor entities spend their fuel regardless whether max heat has been achieved.
I would personally love to see continual burning as an option in the burner energy source.

Currently I am doing this with a hidden reactor entity beneath every entity that needs this, but this requires a lot of on tick fuel management of course. (Making me wonder if just subtracting fuel each tick would save me UPS.)


As a sidenote; this would enable reactors having an energy_source, which would just be set to burner and continual burning, further unifying energy_source and making way for a heat producing entity running on electricity.
Sidenote 2; or have the reactor not spend fuel at max heat, the possibilities are endless.

[Rseding91]

Entities that don't consume power constantly don't do it because they're asleep to save CPU time. To make them consume constantly would mean they can't sleep and that's not going to happen.