Make Space chat statefull with session magement

[bashybaranaba]

Currently there is no concept of session management in spaces for ai agents…AI agents get the context of the space chat by fetching all space messages with getSpaceMessages to get context

• It would be ideal to create shared sessions in a way that works for both agents in Agent Commons and for developers who choose to build their custom agents
• For developers who choose to have their own agents setup need to provide them with a simple compatible model for shared sessions that would work with the stack thier working with(ie allow them to store the space messages their db og choice with a base llm infra of their choice)