Split up and rename var/flags (#17794)

* Split up and rename `var/flags`

* Various fixes

* CL

* Don't rename Phoron Guard phoron preset

---------

Co-authored-by: Cody Brittain <cbrittain10@live.com>

code/modules/hydroponics/grown.dm

@@ -155,7 +155,7 @@
 
 			if(istype(M,/mob/living/carbon/human))
 				var/mob/living/carbon/human/H = M
-				if(H.shoes && H.shoes.item_flags & NOSLIP)
+				if(H.shoes && H.shoes.item_flags & ITEM_FLAG_NO_SLIP)
 					return
 
 			M.stop_pulling()

code/modules/hydroponics/grown_inedible.dm

@@ -73,7 +73,7 @@
 	if(isliving(AM))
 		if(ishuman(AM))
 			var/mob/living/carbon/human/H = AM
-			if(H.shoes?.item_flags & LIGHTSTEP)
+			if(H.shoes?.item_flags & ITEM_FLAG_LIGHT_STEP)
 				return
 		var/mob/living/M = AM
 		M.slip("the [src.name]",4)

code/modules/hydroponics/spreading/spreading.dm

@@ -45,7 +45,7 @@
 	icon = 'icons/obj/hydroponics_growing.dmi'
 	icon_state = "bush4-1"
 	layer = 3
-	flags = PROXMOVE
+	movable_flags = MOVABLE_FLAG_PROXMOVE
 	pass_flags = PASSTABLE
 	mouse_opacity = MOUSE_OPACITY_OPAQUE
 

code/modules/hydroponics/trays/tray.dm

@@ -5,7 +5,7 @@
 	icon_state = "hydrotray3"
 	density = 1
 	anchored = 1
-	flags = OPENCONTAINER
+	atom_flags = ATOM_FLAG_OPEN_CONTAINER
 	volume = 100
 
 	var/mechanical = 1         // Set to 0 to stop it from drawing the alert lights.
@@ -198,7 +198,7 @@
 	..()
 	temp_chem_holder = new()
 	temp_chem_holder.create_reagents(10)
-	temp_chem_holder.flags |= OPENCONTAINER
+	temp_chem_holder.atom_flags |= ATOM_FLAG_OPEN_CONTAINER
 	create_reagents(200)
 	if(mechanical)
 		connect()

code/modules/hydroponics/trays/tray_reagents.dm

@@ -2,7 +2,7 @@
 /obj/item/plantspray
 	icon = 'icons/obj/hydroponics_machines.dmi'
 	item_state = "spray"
-	flags = NOBLUDGEON
+	item_flags = ITEM_FLAG_NO_BLUDGEON
 	slot_flags = SLOT_BELT
 	throwforce = 4
 	w_class = ITEMSIZE_SMALL
@@ -34,7 +34,7 @@
 	icon = 'icons/obj/chemical.dmi'
 	icon_state = "plastic_jug"
 	item_state = "plastic_jug"
-	flags = 0
+	atom_flags = 0
 	possible_transfer_amounts = list(5, 10, 20, 40, 80)
 	volume = 80
 	w_class = ITEMSIZE_NORMAL