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/ragflow_server.py

@@ -38,7 +38,7 @@ from api.versions import get_versions
 
 def update_progress():
     while True:
-        time.sleep(1)
+        time.sleep(3)
         try:
             DocumentService.update_progress()
         except Exception as e: