[Gemini][Agent] Google Managed Agents API

Google has introduced its Managed Agents API, marking a shift away from the traditional DIY approach to building AI agents. This new API simplifies the complex process of creating agents that can execute tasks by managing essential components like the LLM main loop, code execution sandbox, and file storage. The significance of this lies in its potential to democratize advanced AI agent development, making it accessible to a broader range of developers who previously lacked the resources or expertise to handle these intricate setups. This move could accelerate innovation in automated task execution across various industries.