added basic chatbot

src/langgraphagenticai/nodes/basic_chatbot_node.py

@@ -0,0 +1,14 @@
+from src.langgraphagenticai.state.state import State
+
+class BasicChatbotNode:
+    """
+    Basic chatbot logic implementation.
+    """
+    def __init__(self,model):
+        self.llm = model
+
+    def process(self, state: State) -> dict:
+        """
+        Processes the input state and generates a chatbot response.
+        """
+        return {"messages":self.llm.invoke(state['messages'])}