Add API mode

[jakubno]

API mode

This PR adds an API to the babyagi by using the e2b agent protocol SDK that implements the Agent Communication Protocol.

Here is a short preview how to use the API that I also added to the README

To start the server run (from classic directory):

python api.py

and then you can call the API using either the following commands:

To create a task run:

curl --request POST \
  --url http://localhost:8000/agent/tasks \
  --header 'Content-Type: application/json' \
  --data '{
	"input": "Find the Answer to the Ultimate Question of Life, the Universe, and Everything."
}'

You will get a response like this:

{"input":"Find the Answer to the Ultimate Question of Life, the Universe, and Everything.","task_id":"d2c4e543-ae08-4a97-9ac5-5f9a4459cb19","artifacts":[]}

Then to execute one step of the task copy the task_id you got from the previous request and run:

curl --request POST \
  --url http://localhost:8000/agent/tasks/<task-id>/steps

or you can use Python client library:

from agent_protocol_client import AgentApi, ApiClient, TaskRequestBody

...

prompt = "Find the Answer to the Ultimate Question of Life, the Universe, and Everything."

async with ApiClient() as api_client:
    # Create an instance of the API class
    api_instance = AgentApi(api_client)
    task_request_body = TaskRequestBody(input=prompt)

    task = await api_instance.create_agent_task(
        task_request_body=task_request_body
    )
    task_id = task.task_id
    response = await api_instance.execute_agent_task_step(task_id=task_id)

...