Specification

Factor out the timeout middleware.

Tasks

• 1. Move timeout middleware into js-rpc.
• 2. Move the rpc request and response types to js-rpc. Replace the ClientRPCRequestParams as an extension of the default request and response types. You can create a more specific subtype when using extends here. This applies also to AgentRPCRequestParams and associated.
• 3. Timeout middleware must be applied to the agent service as well.