add support for StepFun (#1611)

### What problem does this PR solve?

#1561 

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

---------

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

web/src/pages/user-setting/setting-model/index.tsx

@@ -65,6 +65,8 @@ const IconMap = {
   Gemini: 'gemini',
   Groq: 'groq-next',
   OpenRouter: 'open-router',
+  LocalAI:'local-ai',
+  StepFun:'stepfun'
 };
 
 const LlmIcon = ({ name }: { name: string }) => {