draft-05: Group Order missing from SUBSCRIBE_OK

[englishm]

Found while testing draft-05 interop with @lminiero.

SUBSCRIBE_OK
{
  Subscribe ID (i),
  Expires (i),
  Group Order (8),
  ContentExists (f),
  [Largest Group ID (i)],
  [Largest Object ID (i)]
}

draft-ietf-moq-transport-05 §6.12

moq-rs/moq-transport/src/message/subscribe_ok.rs

Lines 37 to 55 in 868fde2

	fn encode<W: bytes::BufMut>(&self, w: &mut W) -> Result<(), EncodeError> {
	self.id.encode(w)?;
	self.expires.unwrap_or(0).encode(w)?;
	Self::encode_remaining(w, 1)?;
	match self.latest {
	Some((group, object)) => {
	w.put_u8(1);
	group.encode(w)?;
	object.encode(w)?;
	}
	None => {
	w.put_u8(0);
	}
	}
	Ok(())
	}

Since we haven't landed draft-06 changes yet (#8) we can fix this in main and also update the draft-ietf-moq-transport-05 branch.

[englishm]

In b4ad512 I missed SUBSCRIBE_OK.

[englishm]

Fixed in #13