feat: send question with retrieval api #2247 (#2272)

### What problem does this PR solve?
feat: send question with retrieval api #2247

### Type of change


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

web/src/utils/api.ts

@@ -66,6 +66,8 @@ export default {
   deleteMessage: `${api_host}/conversation/delete_msg`,
   thumbup: `${api_host}/conversation/thumbup`,
   tts: `${api_host}/conversation/tts`,
+  ask: `${api_host}/conversation/ask`,
+  mindmap: `${api_host}/conversation/mindmap`,
   // chat for external
   createToken: `${api_host}/api/new_token`,
   listToken: `${api_host}/api/token_list`,