Adds framework for status effects (#19939)

* Adds framework for status effects

* Completes the Renew define

* Lots of work, refactoring

* Further work on status effects

* Gives status effects autism

* Fixes and stuff

code/controllers/subsystem/processing/processing.dm

@@ -0,0 +1,34 @@
+//Used to process objects. Fires once every second.
+
+var/datum/subsystem/processing/SSprocessing
+/datum/subsystem/processing
+	name = "Processing"
+	priority = 25
+	flags = SS_BACKGROUND|SS_POST_FIRE_TIMING|SS_NO_INIT
+	wait = 10
+
+	var/stat_tag = "P" //Used for logging
+	var/list/processing = list()
+	var/list/currentrun = list()
+
+/datum/subsystem/processing/New()
+	NEW_SS_GLOBAL(SSprocessing)
+
+/datum/subsystem/processing/stat_entry()
+	..("[stat_tag]:[processing.len]")
+
+/datum/subsystem/processing/fire(resumed = 0)
+	if (!resumed)
+		currentrun = processing.Copy()
+	//cache for sanic speed (lists are references anyways)
+	var/list/current_run = currentrun
+
+	while(current_run.len)
+		var/datum/thing = current_run[current_run.len]
+		current_run.len--
+		if(thing)
+			thing.process(wait)
+		else
+			processing -= thing
+		if (MC_TICK_CHECK)
+			return