Missing box icons (#14891)

* boxes

* holo box

Resources/Textures/Objects/Weapons/Guns/Ammunition/Boxes/magnum.rsi/meta.json

@@ -1,7 +1,7 @@
 {
   "version": 1,
   "license": "CC-BY-SA-3.0",
-  "copyright": "Taken from cev-eris at https://github.com/discordia-space/CEV-Eris/raw/89456d18dd3e7c330839121e3c6bc8c609700137/icons/obj/ammo.dmi",
+  "copyright": "Taken from cev-eris at https://github.com/discordia-space/CEV-Eris/raw/89456d18dd3e7c330839121e3c6bc8c609700137/icons/obj/ammo.dmi. capbase and cap modified from base and rubber by potato1234x (github) for ss14",
   "size": {
     "x": 32,
     "y": 32
@@ -10,9 +10,15 @@
     {
       "name": "base"
     },
+    {
+      "name": "capbase"
+    },
     {
       "name": "mag-1"
     },
+    {
+      "name": "cap"
+    },
     {
       "name": "hv"
     },