Ammunition boxes code quality (#3790)

* Boxes

* Reorganizes the YAML

* Reverts to previous commit and fixes the icons.

* Readds the new CLRifle.rsi as it'll be used soon.

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

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

@@ -0,0 +1,32 @@
+{
+  "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",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "icon"
+    },
+    {
+      "name": "base"
+    },
+    {
+      "name": "mag-1"
+    },
+    {
+      "name": "flash"
+    },
+    {
+      "name": "hv"
+    },
+    {
+      "name": "practice"
+    },
+    {
+      "name": "rubber"
+    }
+  ]
+}