Integration with Infinity (#2894)

### What problem does this PR solve?

Integration with Infinity

- Replaced ELASTICSEARCH with dataStoreConn
- Renamed deleteByQuery with delete
- Renamed bulk to upsertBulk
- getHighlight, getAggregation
- Fix KGSearch.search
- Moved Dealer.sql_retrieval to es_conn.py


### Type of change

- [x] Refactoring

api/db/services/knowledgebase_service.py

@@ -66,6 +66,16 @@ class KnowledgebaseService(CommonService):
 
         return list(kbs.dicts())
 
+    @classmethod
+    @DB.connection_context()
+    def get_kb_ids(cls, tenant_id):
+        fields = [
+            cls.model.id,
+        ]
+        kbs = cls.model.select(*fields).where(cls.model.tenant_id == tenant_id)
+        kb_ids = [kb["id"] for kb in kbs]
+        return kb_ids
+
     @classmethod
     @DB.connection_context()
     def get_detail(cls, kb_id):