Creates JSON-RPC server endpoints from a Smithy service implementation.

Given a Smithy FunctorAlgebra[Alg, F], this extracts all operations and compiles them into JSON-RPC Endpoint[F] handlers that can be mounted on a communication channel (e.g. FS2Channel).

Before generating endpoints, this method checks whether the service is compatible with the JSON-RPC protocol. If the protocol is unsupported, it returns a Left(UnsupportedProtocolError).

Supports both standard request-response and notification-style endpoints, as well as Smithy-modeled errors.

Usage:

val endpointsOrError = ServerEndpoints(new ServerImpl)
endpointsOrError match {
  case Right(endpoints) => channel.withEndpoints(endpoints)
  case Left(error)      => sys.error(s"Incompatible protocol: $error")
}