Allow newtype pattern instead of type aliasing

[SebastienGllmt]

Suppose you have the following CDDL

protocolMagic = u32

(I think this happens on anything that's a primitive?)

Current behavior

type ProtocolMagic = u32;

(Occasionally) Desired behavior

#[derive(Clone, Debug, Eq, Ord, PartialEq, PartialOrd, serde::Serialize, serde::Deserialize, JsonSchema)]
pub struct ProtocolMagic(pub u32);

[rooooooooob]

How do we want to specify for which types this happens? A flag like --newtypes=protocolMagic,otherType? or a switch on/off globally?

[SebastienGllmt]

yeah not to sure how we want to do this since a global flag doesn't seem so helpful either, but we didn't build any way to annotate codegen hints in comments either