refractor agents (#100)

* refractor agents

* minor cosmetic, add terminal ui for cli

* pump to 0.3.4

* Add temporary path

* fix unclose files in tests

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Co-authored-by: trducng <trungduc1992@gmail.com>

knowledgehub/agents/tools/llm.py

@@ -14,8 +14,8 @@ class LLMArgs(BaseModel):
 
 
 class LLMTool(BaseTool):
-    name = "llm"
-    description = (
+    name: str = "llm"
+    description: str = (
         "A pretrained LLM like yourself. Useful when you need to act with "
         "general world knowledge and common sense. Prioritize it when you "
         "are confident in solving the problem "