Consider `UUri::try_from_parts_expanded_ue_id()`

[PLeVasseur]

It might be nice to have a version of UUri::try_from_parts() that accepts ue_type and ue_instance as two separate parameters to avoid the kinds of bit shifting and or'ing seen here:

fn test_uri(authority: &str, instance: u16, typ: u16, version: u8, resource: u16) -> UUri {
    let entity_id = ((instance as u32) << 16) | (typ as u32);
    UUri::try_from_parts(authority, entity_id, version, resource).unwrap()
}