Refactored fire_act (#19158)

Refactored fire_act() to be in line with TG version, removed useless
parameter, added signal, made non sleepable and forced to call parent.
Added atom_act.dm file for the various *_act procs.

code/modules/mob/living/carbon/carbon.dm

@@ -335,7 +335,7 @@
 
 // ++++ROCKDTBEN++++ MOB PROCS //END
 
-/mob/living/carbon/fire_act(datum/gas_mixture/air, exposed_temperature, exposed_volume)
+/mob/living/carbon/fire_act(exposed_temperature, exposed_volume)
 	..()
 	var/temp_inc = max(min(BODYTEMP_HEATING_MAX*(1-get_heat_protection()), exposed_temperature - bodytemperature), 0)
 	bodytemperature += temp_inc

code/modules/mob/living/living_defense.dm

@@ -337,7 +337,9 @@
 	var/turf/location = get_turf(src)
 	location.hotspot_expose(fire_burn_temperature(), 50, 1)
 
-/mob/living/fire_act()
+/mob/living/fire_act(exposed_temperature, exposed_volume)
+	. = ..()
+
 	IgniteMob(2)
 
 /mob/living/proc/get_cold_protection()

code/modules/mob/living/silicon/robot/life.dm

@@ -329,6 +329,8 @@
 		AddOverlays(image("icon" = 'icons/mob/burning/burning_generic.dmi', "icon_state" = "upper"))
 		AddOverlays(image("icon" = 'icons/mob/burning/burning_generic.dmi', "icon_state" = "lower"))
 
-/mob/living/silicon/robot/fire_act()
+/mob/living/silicon/robot/fire_act(exposed_temperature, exposed_volume)
+	. = ..()
+
 	if(!on_fire) // Silicons don't gain stacks from hotspots, but hotspots can ignite them.
 		IgniteMob()