Introduced beartype (#3460)

### What problem does this PR solve?

Introduced [beartype](https://github.com/beartype/beartype) for runtime
type-checking.

### Type of change

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

api/ragflow_server.py

@@ -14,6 +14,9 @@
 #  limitations under the License.
 #
 
+from beartype.claw import beartype_packages
+beartype_packages(["agent", "api", "deepdoc", "plugins", "rag", "ragflow_sdk"])  # <-- raise exceptions in your code
+
 import logging
 from api.utils.log_utils import initRootLogger
 initRootLogger("ragflow_server")