ACADynamicSessionsCodeExecutor - allow specifying session_id

[stuartleeks]

The initializer for ACADynamicSessionsCodeExecutor creates a new GUID to use as the session ID for dynamic sessions.

I have a scenario where and agent group chat may need to be re-created from saved state. In this case, the ACADynamicSessionsCodeExecutor needs to be associated with a previous instance (so that any execution state is still valid)

I propose adding a new argument to the initializer to allow a session ID to be passed in (defaulting to the current behaviour of creating a GUID if absent).

[ekzhu]

Sounds good, could you submit a PR to add this feature?

[stuartleeks]

will do

[stuartleeks]

PR created. I have a question about what the behaviour should be when calling restart...