Feat: add initial support for Mindmap (#10310)

### What problem does this PR solve?

Add initial support for Mindmap.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

api/db/services/knowledgebase_service.py

@@ -230,6 +230,12 @@ class KnowledgebaseService(CommonService):
             UserCanvas.avatar.alias("pipeline_avatar"),
             cls.model.parser_config,
             cls.model.pagerank,
+            cls.model.graphrag_task_id,
+            cls.model.graphrag_task_finish_at,
+            cls.model.raptor_task_id,
+            cls.model.raptor_task_finish_at,
+            cls.model.mindmap_task_id,
+            cls.model.mindmap_task_finish_at,
             cls.model.create_time,
             cls.model.update_time
             ]