add support for XunFei Spark (#2017)

### What problem does this PR solve?

#1853  add support for XunFei Spark

### Type of change

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

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

conf/llm_factories.json

@@ -3194,6 +3194,13 @@
                     "model_type": "image2text"
                 }
             ]
+        },
+        {
+            "name": "XunFei Spark",
+            "logo": "",
+            "tags": "LLM",
+            "status": "1",
+            "llm": []
         }
     ]
 }