organize better default Lua stuff

Barotrauma/BarotraumaShared/Lua/UserDataUtils.lua

@@ -0,0 +1,31 @@
+LuaSetup.Register = function(typeName)
+    local descriptor = LuaUserData.RegisterType(typeName)
+
+    LuaSetup.Descriptors[typeName] = descriptor
+
+    return descriptor
+end
+
+LuaSetup.RegisterBarotrauma = function(typeName)
+    return LuaSetup.Register("Barotrauma." .. typeName)
+end
+
+LuaSetup.CreateStatic = function(typeName, addCallMethod)
+	local staticUserdata = LuaUserData.CreateStatic(typeName)
+	
+	if addCallMethod then
+		debug.setmetatable(staticUserdata, {
+			__call = function(obj, ...) 
+				local success, result = pcall(staticUserdata.__new, ...)
+
+				if not success then
+					error(result, 2)
+				end
+
+				return result
+			end
+		})
+	end
+
+	return staticUserdata
+end