feat: delete the added model #503 and display an error message when the requested file fails to parse #684 (#708)

### What problem does this PR solve?

feat: delete the added model #503
feat: display an error message when the requested file fails to parse
#684

### Type of change

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

web/src/services/userService.ts

@@ -15,6 +15,7 @@ const {
   set_api_key,
   set_tenant_info,
   add_llm,
+  delete_llm,
 } = api;
 
 const methods = {
@@ -66,6 +67,10 @@ const methods = {
     url: add_llm,
     method: 'post',
   },
+  delete_llm: {
+    url: delete_llm,
+    method: 'post',
+  },
 } as const;
 
 const userService = registerServer<keyof typeof methods>(methods, request);