More svc effect handlers

[Dominion5254]

[dr-bonez]

I'd also like you to include cli bindings for your rpcs. just remove .no_cli() and derive Parser for your params. you may also need to consider how to display the result. .with_display_serializable() is often the easiest for complex types

[dr-bonez]

let's merge this for now and wrap up those other issues in a separate PR