Security Belt Additions (#4045)

## About The Pull Request

Adds the ability for secbelts to carry binoculars, attachments, and
pocket fire extinguishers.

## Why It's Good For The Game

These are all small items with utility that make sense that they could
be stored in a webbing, attachments especially. This should provide some
utility while still not being particularly overpowered, given that there
are no other changes to vest sizes.

## Changelog

:cl:
balance: Vests now have pockets for binoculars, attachments and pocket
fire extinguishers
/:cl:

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

@@ -296,6 +296,7 @@
 		/obj/item/restraints/handcuffs,
 		/obj/item/assembly/flash/handheld,
 		/obj/item/clothing/glasses,
+		/obj/item/binoculars,
 		/obj/item/ammo_casing/shotgun,
 		/obj/item/ammo_box/magazine,
 		/obj/item/ammo_box/c38, //speed loaders don't have a common path like magazines. pain.
@@ -310,6 +311,8 @@
 		/obj/item/flashlight/seclite,
 		/obj/item/melee/classic_baton/telescopic,
 		/obj/item/radio,
+		/obj/item/attachment,
+		/obj/item/extinguisher/mini,
 		/obj/item/clothing/gloves,
 		/obj/item/restraints/legcuffs/bola,
 		/obj/item/holosign_creator/security,