Add small and large space heater appliances

[Xenoamor]

Summary

Content "Adds small and large space heaters as static power grid appliances"

Purpose of change

To expand on #53647

Describe the solution

Simple JSON additions. Vehicle mounted heater recipes have been marked as reversible to make switching between mounted and appliance versions possible.

Describe alternatives you've considered

Testing

Tested when powered that they produce hot air

Additional context

We may want to change space heaters as they exist currently. Both the mounted and appliance versions come from battery operated devices which seems a bit odd. Perhaps a battery operated space heater should be a separate item?

[PatrikLundell]

Do these space heaters actually work, i.e. do they heat up the room they are in (hot air is good, but only if the heat actually spread)? If you place one (or more) in a room with closed doors during winter, do they thaw frozen water in e.g. a bucket on the floor (or in mounted tanks)?

Fuel burning heating systems do not require electricity technically, so they should probably be introduced both as furniture and appliances, with the appliance versions being more advanced to e.g. regulate temperature and setting of it using electronics (again, it should be possible to device mechanical regulation based on physical properties, I think).

[Xenoamor]

I'm not sure how heat works in the game but these work the same as they do in vehicles. It looks like they create a "hot air" effect on them with a fixed radius

[PatrikLundell]

I'm unsure as well. I know vehicle coolers are said to be usable in Mi-go camps, and would guess heaters work the same, but that's not necessarily what's needed to heat an actual room. Vehicles tend to differ from buildings in that their interior is much more cramped, so limitations in the heat dispersion logic might not matter as much.