add yi-lightning (#3119)

### What problem does this PR solve?

#3111
### Type of change

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

conf/llm_factories.json

@@ -2121,6 +2121,12 @@
             "tags": "LLM,IMAGE2TEXT",
             "status": "1",
             "llm": [
+                {
+                    "llm_name": "yi-lightning",
+                    "tags": "LLM,CHAT,16k",
+                    "max_tokens": 16384,
+                    "model_type": "chat"
+                },
                 {
                     "llm_name": "yi-large",
                     "tags": "LLM,CHAT,32k",