Add version 3.3 to godotcpp (#543)

packages/g/godotcpp/xmake.lua

@@ -5,6 +5,7 @@ package("godotcpp")
 
     set_urls("https://github.com/godotengine/godot-cpp.git")
     add_versions("3.2", "77d41fa179e40560f1e264ed483638bf51713779")
+    add_versions("3.3", "dfee6f0ca41863eacdd47bd3c1c4afa46cc97fa4")
 
     add_deps("scons")