Adds 2 tyrmalin charge bulk crates (#6681)

Helbera asked for it cutely.

## About The Pull Request

Adds 2 bulkbuy crates. 75 Thaler per charge. Bulkcrate of 5 and one of
10. 50 Thaler = 1 point according to siwicons.

## Why It's Good For The Game

The mining crate is only bought for charges. 2 charges per crate and it
quickly lags up cargo. Kinda sad. QOL kinda.

## Changelog

:cl:
add: Some Tyrmalin explosives experts now decided to bulk ship their
mining charges.
/:cl:

code/game/content/factions/corporations/nanotrasen/nanotrasen-supply/supplies.dm

@@ -140,6 +140,28 @@
 		/datum/access/station/supply/mining,
 	)
 
+/datum/supply_pack/nanotrasen/misc/mining_charges_smallbulk_tyrmalin
+	name = "Tyrmalin Mining Charge Crate"
+	contains = list(
+		/obj/item/grenade/explosive/ied/tyrmalin = 5,
+	)
+	container_type = /obj/structure/closet/crate/secure/gear
+	container_name = "Tyrmalin Mining Charge crate"
+	container_access = list(
+		/datum/access/station/supply/mining,
+	)
+
+/datum/supply_pack/nanotrasen/misc/mining_charges_largebulk_tyrmalin
+	name = "Bulkpurchase Tyrmalin Mining Charge Crate"
+	contains = list(
+		/obj/item/grenade/explosive/ied/tyrmalin = 10,
+	)
+	container_type = /obj/structure/closet/crate/secure/gear
+	container_name = "Tyrmalin Mining Charge crate Bulkbuy!!!"
+	container_access = list(
+		/datum/access/station/supply/mining,
+	)
+
 /datum/supply_pack/nanotrasen/misc/breathing_nitrogen
 	name = "Emergency Nitrogen Supplies"
 	contains = list(

code/game/objects/items/weapons/grenades/explosive.dm

@@ -107,6 +107,7 @@
 	explosion_size = 1
 	det_time = 20
 	range = 3
+	worth_intrinsic = 75
 
 /obj/item/grenade/explosive/ied/tyrmalin/on_explosion(var/turf/O)
 	if(explosion_size)