Simplify how None is handled and fixed libs getting loaded too late

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Lua/LuaClasses/LuaTypes.cs

@@ -2,11 +2,6 @@
 
 namespace Barotrauma
 {
-    public struct LuaNone
-    {
-
-    }
-
     public struct LuaSByte
     {
         public readonly sbyte Value;

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Lua/LuaConverters.cs

@@ -256,14 +256,12 @@ namespace Barotrauma
 
             Script.GlobalOptions.CustomConverters.SetScriptToClrCustomConversion(dataType, typeof(Option<T>), v =>
             {
-                if (v.UserData.Object is LuaNone)
-                {
-                    return Option<T>.None();
-                }
-                else
-                {
-                    return Option<T>.Some(v.ToObject<T>());
-                }
+                return Option<T>.Some(v.ToObject<T>());
+            });
+
+            Script.GlobalOptions.CustomConverters.SetScriptToClrCustomConversion(DataType.Nil, typeof(Option<T>), v =>
+            {
+                return Option<T>.None();
             });
         }