Consider adding switch to opt out of options type name disambiguation

For `FooClient`, all client/client method options will have the prefix `FooClient`. This is to disambiguate the case when an SDK contains multiple clients and two (or more) clients have a method with the same name (e.g. `SomeMethod`), Without the prefix, `SomeMethodOptions` would collide.

For SDKs with a single client, and that will _always_ have a single client, the prefix is unnecessary and creates ugly names. We could consider adding a switch to opt out of this prefix. It works IFF an SDK contains a single client, else an error is generated (this is what we do in the go emitter). Note that opting in and then later opting out would result in a breaking change. So, one must be 100% confident that the SDK in question will always contain only one client.

Inizia esaminando il comportamento di denominazione dei tipi option dell’emitter Rust e confrontalo con la gestione di un singolo client da parte dell’emitter Go. Definisci dove deve trovarsi l’interruttore di opt-out, come più client devono produrre un errore e verifica che gli SDK con un singolo client omettano il prefisso del client senza modificare il comportamento predefinito.

Scritto dal modello di indicizzazione a partire dal testo della issue.