Adds gladiuses (gladii?) (#93631)

## About The Pull Request

Adds the Gladius alongside its scabbard. Replaces undead roman
legionarries' claymores with gladii.
<img width="152" height="105" alt="image"
src="https://github.com/user-attachments/assets/fdd21960-0f73-4564-b381-7044838a0f51"
/>
<img width="194" height="165" alt="image"
src="https://github.com/user-attachments/assets/a3f602e1-9ce6-4ded-b40d-d7088da292c9"
/>
<img width="136" height="133" alt="image"
src="https://github.com/user-attachments/assets/e8105ba3-d1e5-42cb-86e5-16db6edd56f7"
/>


## Why It's Good For The Game

This started as me thinking "hmmm those guys shouldn't have longswords"
and so I gave them the gladius, the famous standard issue foot soldier
weapon for the roman army. It's better in that it's more historically
accurate, which is definitely something everyone cares about a lot.

## Changelog
🆑
add: Roman skeletons now have Roman swords.
/🆑

---------

Co-authored-by: die <96586172+grungussuss@users.noreply.github.com>

code/game/objects/items/melee/misc.dm

@@ -546,3 +546,4 @@
 	if(attack_type == (PROJECTILE_ATTACK || LEAP_ATTACK || OVERWHELMING_ATTACK))
 		final_block_chance = 0 //Don't bring a...mace to a gunfight, and also you aren't going to really block someone full body tackling you with a mace. Or a road roller, if one happened to hit you.
 	return ..()
+

code/game/objects/items/storage/belt.dm

@@ -640,6 +640,15 @@
 	worn_icon_state = "grass_sheath"
 	storage_type = /datum/storage/green_sabre_belt
 
+/obj/item/storage/belt/sheath/gladius
+	name = "gladius scabbard"
+	desc = "A fun-sized sheath for a fun-sized sword."
+	icon_state = "gladius_sheath"
+	inhand_icon_state = "gladius_sheath"
+	worn_icon_state = "gladius_sheath"
+	storage_type = /datum/storage/gladius_belt
+	stored_blade = /obj/item/claymore/gladius
+
 /obj/item/storage/belt/plant
 	name = "botanical belt"
 	desc = "A sturdy leather belt used to hold most hydroponics supplies."

code/game/objects/items/weaponry.dm

@@ -363,6 +363,25 @@ for further reading, please see: https://github.com/tgstation/tgstation/pull/301
 /obj/item/claymore/highlander/robot/process()
 	loc.layer = ABOVE_ALL_MOB_LAYER
 
+/obj/item/claymore/gladius
+	name = "gladius"
+	desc = "A short but formidable sword, favored by recently-reanimated ancient warriors."
+	icon = 'icons/obj/weapons/sword.dmi'
+	icon_state = "gladius"
+	inhand_icon_state = "gladius"
+	lefthand_file = 'icons/mob/inhands/weapons/swords_lefthand.dmi'
+	righthand_file = 'icons/mob/inhands/weapons/swords_righthand.dmi'
+	sharpness = SHARP_POINTY
+	attack_verb_continuous = list("stabs", "cuts")
+	attack_verb_simple = list("stab", "cut")
+	slot_flags = null
+	sound_vary = TRUE
+	block_sound = 'sound/items/weapons/parry.ogg'
+	hitsound = 'sound/items/weapons/bladeslice.ogg'
+	pickup_sound = SFX_KNIFE_PICKUP
+	drop_sound = SFX_KNIFE_DROP
+
+
 /obj/item/katana
 	name = "katana"
 	desc = "Woefully underpowered in D20."