agent: deleting a group does not send effects

[subnet-arts]

Members of a group do not receive booth delete effects when a group is archived in the Groups app.

[subnet-arts]

Ok, fixed this so that booth owner gets delete, removes from booth store, sends out effects to UI and subscribers. Subscribing agents then get the effect, delete from their local stores and send out effects to UI.

Here is the json for the effect:

{
    "json": {
        "context": {
            "booth": "~zod-groups-my-group"
        },
        "action": "booth-reaction",
        "effects": [
            {
                "data": null,
                "effect": "delete",
                "resource": "booth"
            }
        ]
    },
    "id": 2,
    "response": "diff"
}