feat(edge_services): add doc and cli for head stage (scaleway#1502)

Co-authored-by: esoulard <esoulard@scaleway.com>

Author: scaleway-bot

scaleway-async/scaleway_async/edge_services/v1beta1/api.py

@@ -504,6 +504,7 @@ async def list_head_stages(
         page_size: Optional[int] = None,
     ) -> ListHeadStagesResponse:
         """
+        List Head stage for your pipeline.
         :param pipeline_id: ID of the pipeline to update.
         :param page: Page number to return, from the paginated results.
         :param page_size: Number of head stages to return per page.
@@ -539,6 +540,7 @@ async def list_head_stages_all(
         page_size: Optional[int] = None,
     ) -> list[ListHeadStagesResponseHeadStage]:
         """
+        List Head stage for your pipeline.
         :param pipeline_id: ID of the pipeline to update.
         :param page: Page number to return, from the paginated results.
         :param page_size: Number of head stages to return per page.

scaleway/scaleway/edge_services/v1beta1/api.py

@@ -502,6 +502,7 @@ def list_head_stages(
         page_size: Optional[int] = None,
     ) -> ListHeadStagesResponse:
         """
+        List Head stage for your pipeline.
         :param pipeline_id: ID of the pipeline to update.
         :param page: Page number to return, from the paginated results.
         :param page_size: Number of head stages to return per page.
@@ -537,6 +538,7 @@ def list_head_stages_all(
         page_size: Optional[int] = None,
     ) -> list[ListHeadStagesResponseHeadStage]:
         """
+        List Head stage for your pipeline.
         :param pipeline_id: ID of the pipeline to update.
         :param page: Page number to return, from the paginated results.
         :param page_size: Number of head stages to return per page.