Add Provides-extra to uploaded metadata

Author: Secrus

src/poetry/publishing/uploader.py

@@ -193,14 +193,13 @@ def post_data(self, file: Path) -> dict[str, Any]:
             "requires_dist": meta.requires_dist,
             "requires_external": meta.requires_external,
             "requires_python": meta.requires_python,
+            "provides_extra": meta.provides_extra,
         }
 
         # Metadata 2.1
         if meta.description_content_type:
             data["description_content_type"] = meta.description_content_type
 
-        # TODO: Provides extra
-
         return data
 
     def _upload(