adds an admin combat-ready miner outfit (#72286)

## About The Pull Request
adds an admin outfit intended for easy spawn ins as a shaft miner, to
test megafauna and whatnot
included are:
bone bracers, bone talisman
both suit and hood are fully goliath plated
webbing with 2 lux pens, 2 standard pens and 2 legion cores
gps, advanced scanner
kinetic accelerator with bayonet and seclite, compact kinetic crusher
(normal sized), upgraded resonator
night vision medhud mesons
mini extinguisher
all the trophies and 10 copies of every modkit

## Why It's Good For The Game
makes localhost megafauna fights require less preptime

## Changelog
🆑
admin: adds an admin combat-ready miner outfit
/🆑

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

@@ -417,14 +417,23 @@
 		))
 
 
-/obj/item/storage/belt/mining/vendor
-	contents = newlist(/obj/item/survivalcapsule)
+/obj/item/storage/belt/mining/vendor/PopulateContents()
+	new /obj/item/survivalcapsule(src)
 
 /obj/item/storage/belt/mining/alt
 	icon_state = "explorer2"
 	inhand_icon_state = "explorer2"
 	worn_icon_state = "explorer2"
 
+/obj/item/storage/belt/mining/healing/PopulateContents()
+	for(var/i in 1 to 2)
+		new /obj/item/reagent_containers/hypospray/medipen/survival/luxury(src)
+	for(var/i in 1 to 2)
+		new /obj/item/reagent_containers/hypospray/medipen/survival(src)
+	for(var/i in 1 to 2)
+		var/obj/item/organ/internal/monster_core/core = new /obj/item/organ/internal/monster_core/regenerative_core/legion(src)
+		core.preserve()
+
 /obj/item/storage/belt/mining/primitive
 	name = "hunter's belt"
 	desc = "A versatile belt, woven from sinew."

code/game/objects/items/storage/boxes/job_boxes.dm

@@ -248,6 +248,31 @@
 		var/plush_path = /obj/effect/spawner/random/entertainment/plushie
 		new plush_path(src)
 
+/obj/item/storage/box/survival/mining/bonus
+	mask_type = null
+	internal_type = /obj/item/tank/internals/emergency_oxygen/double
+
+/obj/item/storage/box/survival/mining/bonus/PopulateContents()
+	..()
+	new /obj/item/gps/mining(src)
+	new /obj/item/t_scanner/adv_mining_scanner(src)
+
+/obj/item/storage/box/miner_modkits
+	name = "miner modkit/trophy box"
+	desc = "Contains every modkit and trophy in the game."
+
+/obj/item/storage/box/miner_modkits/Initialize(mapload)
+	. = ..()
+	atom_storage.set_holdable(list(/obj/item/borg/upgrade/modkit, /obj/item/crusher_trophy))
+	atom_storage.numerical_stacking = TRUE
+
+/obj/item/storage/box/miner_modkits/PopulateContents()
+	for(var/trophy in subtypesof(/obj/item/crusher_trophy))
+		new trophy(src)
+	for(var/modkit in subtypesof(/obj/item/borg/upgrade/modkit))
+		for(var/i in 1 to 10) //minimum cost ucrrently is 20, and 2 pkas, so lets go with that
+			new modkit(src)
+
 /obj/item/storage/box/skillchips
 	name = "box of skillchips"
 	desc = "Contains one copy of every skillchip"