Add AgentInitializerComponent to initialize agents

src/backend/langflow/components/agents/AgentInitializer.py

@@ -0,0 +1,32 @@
+from typing import List
+
+from langchain.agents import AgentExecutor, AgentType, initialize_agent, types
+from langflow import CustomComponent
+from langflow.field_typing import BaseChatMemory, BaseLanguageModel, Tool
+
+
+class AgentInitializerComponent(CustomComponent):
+    def build_config(self):
+        agents = list(types.AGENT_TO_CLASS.keys())
+        # field_type and required are optional
+        return {
+            "agent": {"options": agents, "value": agents[0], "display_name": "Agent Type"},
+            "max_iterations": {"display_name": "Max Iterations", "value": 10},
+            "memory": {"display_name": "Memory"},
+            "tools": {"display_name": "Tools"},
+            "llm": {"display_name": "Language Model"},
+        }
+
+    def build(
+        self, agent: str, llm: BaseLanguageModel, memory: BaseChatMemory, tools: List[Tool], max_iterations: int
+    ) -> AgentExecutor:
+        agent = AgentType(agent)
+        return initialize_agent(
+            tools=tools,
+            llm=llm,
+            agent=agent,
+            memory=memory,
+            return_intermediate_steps=True,
+            handle_parsing_errors=True,
+            max_iterations=max_iterations,
+        )