Function createRivetKit

Returns {
    getOrCreateActor: <ActorName extends string | number | symbol>(
        opts: ActorOptions<Registry, ActorName>,
    ) => {
        create: () => void;
        key: string;
        mount: () => void;
        setState: (set: Updater<ActorStateReference<Actors>>) => void;
        state: ActorsStateDerived<Registry, ActorName>;
    };
    store: Store<
        InternalRivetKitStore<Registry, Actors>,
        (
            cb: InternalRivetKitStore<Registry, Actors>,
        ) => InternalRivetKitStore<Registry, Actors>,
    >;
}