Helper for implementing a serializer that supports a reduced subset of the serde data model
Often times you need to implement a serializer where a bunch of input types are unexpected/unsupported This convenience macro allows you to declare those more easily:
```rust use serdeserializerquickunsupported::serializerunsupported;
struct MySerializer;
impl serde::Serializer for MySerializer {
type Ok = ();
type Error = serde::de::value::Error;
serializerunsupported! {
err = (