Plug for custom devices

I’m working on a Snap package in strict confinement that demands access to /dev/sdr0 and /dev/sdr1 that are Software Defined Radio (SDR) devices. Is there any interface that supports custom device associations with Snap, that would possibly also require review before publishing to store? In particular, I need the right entry in the device cgroup, c 235:* rwm, as well as the right AppArmor profile to access the device.