Makes Circuits Make Their Own Research Designs

Circuits generate a research design datum when the game starts up instead of me having to manually define them every time I make a new circuit.  Hopefully this reduces missing circuits due to mistakes.  The circuit box also spawns specific circuits using a similar method for similar reasons.

Other things this does:
Splits the reagent related manipulation circuits to their own category, which cleans up a few repeated New()s.

code/modules/integrated_electronics/_defines.dm

@@ -5,6 +5,15 @@
 #define DATA_CHANNEL "data channel"
 #define PULSE_CHANNEL "pulse channel"
 
+#define IC_SPAWN_DEFAULT			1 // If the circuit comes in the default circuit box.
+#define IC_SPAWN_RESEARCH 		2 // If the circuit design will be autogenerated for RnD.
+
+var/list/all_integrated_circuits = list()
+
+/proc/initialize_integrated_circuits_list()
+	for(var/thing in typesof(/obj/item/integrated_circuit))
+		all_integrated_circuits += new thing()
+
 /obj/item/integrated_circuit
 	name = "integrated circuit"
 	desc = "It's a tiny chip!  This one doesn't seem to do much, however."
@@ -18,7 +27,8 @@
 	var/next_use = 0 //Uses world.time
 	var/complexity = 1 //This acts as a limitation on building machines, more resource-intensive components cost more 'space'.
 	var/cooldown_per_use = 1 SECOND
-	var/category = /obj/item/integrated_circuit // Used by the toolsets to filter out category types
+	var/spawn_flags = null				// Used for world initializing, see the #defines above.
+	var/category_text = "NO CATEGORY"	// To show up on circuit printer, and perhaps other places.
 
 /obj/item/integrated_circuit/examine(mob/user)
 	..()