Install the RivetKit Swift package dependency.
Import `RivetKitClient` in your Swift code.
Configure the `ClientConfig` with the endpoint, namespace, and token.
Create a `RivetKitClient` instance with the configuration.
Get or create an actor handle using `client.getOrCreate()`.
Call actions on the actor handle using `handle.action()`.
Manage stateful connections using `handle.connect()` and `conn.dispose()`.
Dispose of the client using `client.dispose()` when done.