Ray projects schema and validation (#5329)

python/ray/__init__.py

@@ -96,6 +96,7 @@ from ray.worker import (
     wait,
 )  # noqa: E402
 import ray.internal  # noqa: E402
+import ray.projects  # noqa: E402
 # We import ray.actor because some code is run in actor.py which initializes
 # some functions in the worker.
 import ray.actor  # noqa: F401
@@ -135,6 +136,7 @@ __all__ = [
     "is_initialized",
     "method",
     "profile",
+    "projects",
     "put",
     "register_custom_serializer",
     "remote",