Adds Contaminant Detector HUD (#15970)

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

@@ -155,6 +155,7 @@
 /mob/living/silicon/robot/handle_regular_hud_updates()
 	var/fullbright = FALSE
 	var/seemeson = FALSE
+	var/seejanhud = src.sight_mode & BORGJAN
 
 	var/area/A = get_area(src)
 	if(A?.no_spoilers)
@@ -209,6 +210,7 @@
 	if(plane_holder)
 		plane_holder.set_vis(VIS_FULLBRIGHT,fullbright)
 		plane_holder.set_vis(VIS_MESONS,seemeson)
+		plane_holder.set_vis(VIS_JANHUD,seejanhud)
 
 	..()
 

code/modules/mob/living/silicon/robot/robot_modules/station.dm

@@ -514,6 +514,7 @@ var/global/list/robot_modules = list(
 	src.modules += new /obj/item/weapon/mop(src)
 	src.modules += new /obj/item/pupscrubber(src)
 	src.modules += new /obj/item/device/lightreplacer(src)
+	src.modules += new /obj/item/borg/sight/janitor(src)
 	var/obj/item/weapon/reagent_containers/spray/LS = new /obj/item/weapon/reagent_containers/spray(src)
 	src.emag += LS
 	LS.reagents.add_reagent("lube", 250)

code/modules/mob/mob_planes.dm

@@ -40,6 +40,7 @@
 	plane_masters[VIS_ADMIN3] 		= new /obj/screen/plane_master{plane = PLANE_ADMIN3}			//For admin use
 
 	plane_masters[VIS_MESONS]		= new /obj/screen/plane_master{plane = PLANE_MESONS} 			//Meson-specific things like open ceilings.
+	plane_masters[VIS_JANHUD]		= new /obj/screen/plane_master{plane = PLANE_JANHUD} 			//Meson-specific things like open ceilings.
 
 	plane_masters[VIS_BUILDMODE]	= new /obj/screen/plane_master{plane = PLANE_BUILDMODE}			//Things that only show up while in build mode
 
@@ -113,7 +114,7 @@
 			alter_values(SP, values)
 
 
-	
+
 
 ////////////////////
 // The Plane Master