[FT] Add py.typed to lighteval (#1071)

* initial impl for long horizon execution

* ready for review

* [FT] add py.typed file

* fixing some branch issues

Author: akshathmangudi

pyproject.toml

@@ -30,6 +30,9 @@ build-backend = "setuptools.build_meta"
 [tool.setuptools.packages.find]
 where = ["src"]
 
+[tool.setuptools.package-data]
+lighteval = ["py.typed"]
+
 [project]
 name = "lighteval"
 version = "0.11.1.dev0"