add API for tenant function (#2866)

### What problem does this PR solve?

feat: API access key management
https://github.com/infiniflow/ragflow/issues/2846
feat: Render markdown file with remark-loader
https://github.com/infiniflow/ragflow/issues/2846

### Type of change

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

api/apps/conversation_app.py

@@ -218,7 +218,7 @@ def tts():
     req = request.json
     text = req["text"]
 
-    tenants = TenantService.get_by_user_id(current_user.id)
+    tenants = TenantService.get_info_by(current_user.id)
     if not tenants:
         return get_data_error_result(retmsg="Tenant not found!")