Allow setting queuing discipline kind

[thomaseizinger]

I'd like to use netlink to set the qdisc for a device to fq. Currently, I am building the message for this manually because setting the kind is not supported in rtnetlink.

Is that something that would be in scope?

See https://github.com/firezone/firezone/pull/10503/files#diff-badc1fdd48cd3978ca618edfd00ff7c8ed5ed36018d113f169227d3955ddd8c3R261-R276.