WIP minetest <-> laby import/export

- currently possible to export a laby into minetest
- start of a lua content parser to import .we into lab

java/org/artisanlogiciel/lua/LuaObject.java

@@ -0,0 +1,4 @@
+package org.artisanlogiciel.lua;
+
+public class LuaObject {
+}