feat: add optimization package stub

Author: andrewklatzke

pyproject.toml

@@ -21,4 +21,4 @@ members = [
 # Resolve launchdarkly-server-sdk-ai from the local workspace member rather
 # than PyPI. This applies to all workspace members automatically.
 [tool.uv.sources]
-launchdarkly-server-sdk-ai = {workspace = true}
+launchdarkly-server-sdk-ai = {workspace = true}