Split up and rename var/flags (#17794)

* Split up and rename `var/flags`

* Various fixes

* CL

* Don't rename Phoron Guard phoron preset

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

code/modules/psionics/abilities/psi_punch.dm

@@ -15,7 +15,7 @@
 	armor_penetration = 20
 	cooldown = 0
 	psi_cost = 3
-	flags = 0
+	item_flags = 0
 	hitsound = 'sound/weapons/resonator_blast.ogg'
 
 /obj/item/spell/punch/on_melee_cast(atom/hit_atom, mob/living/user, def_zone)

code/modules/psionics/abilities/rend.dm

@@ -19,7 +19,7 @@
 	psi_cost = 35
 	attack_verb = list("rent apart", "disintegrated")
 	hitsound = 'sound/weapons/heavysmash.ogg'
-	flags = 0
+	item_flags = 0
 	var/structure_mode = FALSE
 
 /obj/item/spell/rend/on_use_cast(mob/user, bypass_psi_check)

code/modules/psionics/equipment/psipower.dm

@@ -1,7 +1,7 @@
 /obj/item/psychic_power
 	name = "psychic power"
 	icon = 'icons/obj/psychic_powers.dmi'
-	flags = 0
+	atom_flags = 0
 	anchored = TRUE
 	throwforce = 0 //Just to be on the safe side
 	throw_range = 0