New belt controls (#1298)

* Work for a madman

* God, that's a lot of hardcoding

* Fixed belt2 smartequip and cleaned up

* Continued clean up

* No scope creep!

* Replaced belt1 for upstream default belt

* Moved CP14OpenSkillMenu to CP14ContentContexts

* Changed naming of belt1 textures to just belt

* Updated new belt1 refrences

* I forgot to edit the RSI meta

* fix all BELT1 Texture instance

---------

Co-authored-by: Red <96445749+TheShuEd@users.noreply.github.com>

Content.Shared/_CP14/Input/CP14ContentKeyFunctions.cs

@@ -0,0 +1,13 @@
+using Robust.Shared.Input;
+
+namespace Content.Shared._CP14.Input
+{
+    [KeyFunctions]
+
+    public static class CP14ContentKeyFunctions
+    {
+        public static readonly BoundKeyFunction OpenBelt2 = "OpenBelt2";
+        public static readonly BoundKeyFunction SmartEquipBelt2 = "SmartEquipBelt2";
+        public static readonly BoundKeyFunction CP14OpenSkillMenu = "CP14OpenSkillMenu";
+    }
+}