Gun refactor (#8301)

Co-authored-by: Kara <lunarautomaton6@gmail.com>
Co-authored-by: T-Stalker <le0nel_1van@hotmail.com>
Co-authored-by: T-Stalker <43253663+DogZeroX@users.noreply.github.com>
Co-authored-by: ElectroJr <leonsfriedrich@gmail.com>
Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Resources/Textures/Objects/Weapons/Guns/Ammunition/Magazine/Dart/darts.rsi/meta.json

@@ -7,9 +7,6 @@
     "license": "CC-BY-SA-3.0",
     "copyright": "https://github.com/discordia-space/CEV-Eris/raw/831c7c2743530e8a31910d781bae9dc34f3f1ec8/icons/obj/ammo_mags.dmi",
     "states": [
-        {
-            "name": "icon"
-        },
         {
             "name": "base"
         },