fix: rename cxx → gcc13/gcc-native (resolve package name conflict)

recipes/dev/gcc13 was claiming name='cxx' — conflicted with
local/recipes/dev/gcc-native also claiming 'cxx'. Renamed to match
directory names for unique package identification by the cookbook.

recipes/wip/dev/python/python-launcher/recipe.toml

@@ -1,3 +1,7 @@
+[package]
+name = "python-launcher"
+version = "0.1.0"
+
 #TODO serde crate error (after cargo update)
 [source]
 git = "https://github.com/brettcannon/python-launcher"