Predictable device names for PHYs

Is your feature request related to a problem? Please describe.
Somewhat recently (with their 0.18 release), IWD has started to manage the network interfaces (non-PHYs?) of wifi cards itself. Their idea, as described here seems to be that a wifi card is better represented by it's PHY interface, than its network interface.

This seems sensible, and as they mention at the end of the above linked page, it would make sense to have the PHYs named predictably instead of or in addition to the default network interfaces.

Describe the solution you'd like
udev could rename the PHYs predictably, similar to how it renames actual network interfaces.

Describe alternatives you've considered
If udev does not touch the PHYs, it is up to the respective supplicant/wifi daemon to figure out how to configure multiple wifi cards predictably, with PHY names possibly being unstable.

Start by tracing udev’s existing predictable network-interface naming and reading the linked IWD interface-lifecycle description. Done means PHYs receive predictable names that support multiple Wi-Fi cards; the issue names no source file or test, so the relevant code and test entry points still need to be located.