Additional/custom slot names

[TeamDman]

SFM supports output to EMPTY SLOTS IN chest

SFM does not yet support output to UPGRADE SLOTS IN hydroponic_bed

SFM does not yet support output to FUEL SLOTS IN furnace

Interacting with the upgrade slots in machines from other mods would require SFM to implement a custom wrapper thingy that exposes those slots so that SFM can play with them; it will require per-mod compat, which is not the end of the world as SFM already does per-mod compat with Mekanism and stuff.

Having to enumerate all the kind of slots, input,output,fuel,extra,etc would always leave gaps.
It would be neat if users could declare their own slot stuff.

LET input_slots BE SLOTS 0-9
LET output_slots BE SLOTS 10-19
EVERY 20 TICKS DO
  INPUT FROM chest1 SLOTS input_slots
  OUTPUT TO chest1 SLOTS output_slots
END

even more dank:

LET input_slots BE 0-9 # symbolic rather than eagerly const evaluated
LET output_slots BE 10-19
EVERY 20 TICKS DO
  INPUT FROM chest1 SLOTS input_slots
  OUTPUT TO chest1 SLOTS output_slots
END

[TeamDman]

mekanism metallurgic infuser has an "extra" slot for the redstone/carbon/diamond/etc infusion item