Add rmpv::ext::to_value_named to keep struct keys #337
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The current
rmpv::ext::to_valueimplementation turns Structs intoValue::Array<Value::String>which is not deserializable by other languages.Technically I would call this a bug and opt to change the existing
to_valueimplementation, but to stay cautious of not breaking existing users' code I think it makes sense to introduce a newto_value_namedfn which instead turns Structs intoValue::Mapand maintains their keys.Fixes #190