make them mesecon/digiline controllable (on/off only, alldir rules)

also fix a couple of old texture references

merge table and standing lamps into the new code

of all the relevant lights, the plasma ball is the only one that remains
on/off-only, since dimmable doesn't make sense there.

That one, and any future lights that get the on/off-only treatment, will
use the previous on/off behavior, i.e. turn off with the messages "off"
or "low" or a number < 4, and turn on with "med", "hi", "max", "on" or
a number > 3

This alters the behavior of table/standing lamps - they will no longer
cycle brightnesses by right-click.  Like all other controllable lights,
they'll just toggle on/off.  If there's enough demand for it, I'll add
that feature back in at a later date.

allow non-dimmables to respond to "off", "low", "med", "hi", "max", "on"

number messages for dimmables:
0 turns the light off
1-3 sets it to "low"
4-7 sets it to "med"
8-11 sets it to "hi"
12+ sets it to "max" (i.e. full-on)

non-dimmables:
a number > 3 or the strings "med", "hi", "max", or "on" turn the light on
a number < 4 or the strings "off" and "low" turn the light off

digiline stuff to be more generic, and add various digilines connections
rules to complement mesecons rules.

Mesecons must be present to get the "wallmounted" rules for digilines nodes.
Without mesecons, nodes that want wall rules will get alldir rules instead.

Add mesecons support to table and standing lamps (off -> max -> off).

Add digilines support to all other lights that now support mesecons,
except rope lights, since they're a mesecon conductor.

(will approach that last one later)

by extension, require its presence to cause doors to be 3d

for consistency with the appearance/style of mtg doors in worlds that
wouldn't normally use the 3d extras mod

minor rework of closet door textures to make them work decently in both modes

also got rid of some old dirt+coal+door recipes

all are derived from homedecor's pre-mtg-doors models, with minimal changes,
so doors should look virtually identical to what they used to.

uses the old clone_node() technique to force-dereference the door defs

reworked a few textures for quality and to fix stuff I broke but didn't
notice right away, pulling from pre-mtg-doors when needed.

also fixes the broken alpha on doors that use it.

move lrfurn tables to homedecor_tables

create new mod: homedecor_seating

move lrfurn chair, sofas, and all types of homedecor
chairs, benches, etc. that I could think of,
whether intended for exterior or interior use,
to that new mod.

(except tree swing :P )

lrfurn was left empty after this, so deleted.

"off", "low", "med", "hi", "max".  Any other message is ignored

shift-punch to set the digiline channel

only connects from X/Z directions

right-click still cycles brightness as before

also adds protection check for right-click brightness changing

add proper "receiver" group
remove color from switch buttons

Each light connects only according to what sides make sense.

For example:

* a plasma lamp cube or large lattice lamp will connect from all 6 sides
* a ground lantern will only connect from its NSEW sides, not its top or
  bottom
* a glowlight slab, glowlight cube, or lattice cube uses the same rules as
  mesecons lamps, so its four edges and it back/bottom, whatever its
  orientation, but not its top/front.
* a (kitchen) ceiling lamp, and a (hanging, exterior) ceiling lantern will
  only connect from the top.

Rope lights are defined as a conductor, just like a mesecons wire,
so if mesecons is present, they will default to off unless powered by
a mesecons wire/switch/etc.

You can still right-click-toggle individual segments on/off.

Ceiling rope light connection rules are a little funky, but they work
(I wanted them to only connect from the top, but I couldn't get it
just right).  Floor-orientation connections are straightforward.

also removed debug prints

Lights are forced-on when placed, and remain so
until they receive a mesecons "off" signal.

Lights can be toggled on/off independent of the
mesecon signal state by right click, which will
persist until the next signal transition,
which will change the light to follow.

brightness version, instead of "off".  do
the same for their crafts.

with right-click.

Rework glowlight slab and cube textures, simplify,
use overlays and compositing, so that the bulk
of the light can switch between a dark, matte surface,
and a bright surface with central glare gradient, and
so that the surface and eging respond to param2 color.

Tweak all other relevant nodes so that their light
source changes to a darkened (or even translucent
texture) when off.

On/off switching doesn't affect things like oil lamps,
candles, chandeliers, etc.  Just basically the stuff
that would be electric-powered in real life.

If in a protected area, only that area's owner can
turn the light on/off.

(lost during The Big Split)

allow showerhead to be turned on when placed 2m above the tub
(must be on the same end as the taps)

simplify gates code a bit

remove duplicate dishwasher recipe
more kitchen depends fixes
fix wrong brass taps recipe (ref technic brass, need basic_materials brass)
re-add missing bathroom items recipes
re-add missing stading- and table-lamp recipes
add alternate dishwasher recipe
add recipes for "half-doors"
change light bath tiles recipe (don't need white dye for base node, now)
move japanese wall parts to homedecor_misc, make _doors opt depend on that

also added optdepend on kitchen stuff (for the recipe)

(for easier searching in sfinv and unified inv)