missing imports for base

Former-commit-id: b04f963f7e1da8107ec9d462be6d563922dce372

swarms/agents/tools/base.py

@@ -7,6 +7,9 @@ from pydantic import BaseModel
 
 from swarms.utils.logger import logger
 
+from langchain.llms.base import BaseLLM
+from langchain.agents.agent import AgentExecutor
+from langchain.agents import load_tools
 
 class ToolScope(Enum):
     GLOBAL = "global"