Allow to set the NamingStrategy for StringEnumConverter in ApiClientSerializationOptions

[CodinFae]

Hi,

Currently, it is only possible to pass a boolean an whether enums are serialized as string vs as int. However, StringEnumConverter has multiple NamingStrategy it can accept. Would it be possible to pass a NamingStrategy as parameters to ApiClientSerializationOptions? Would there be another way?

I can try and make a PR if needed

Thanks!