[Feature Request]: [native] Run meshtasticd as an unprivileged user

[battlehax]

Platform

Linux Native

Description

As it stands, on a linux native node, meshtasticd is running as root. This could be troublesome if the right kind of bugs are discovered in the future. Discussed with @vidplace7 on discord and, though it may be something for 3.0, it seems worth addressing.
The resolution would involve at least: setting up udev rules or similar to allow unprivileged spi access, creating a user to run the service, with the proper permissions and home to store vfs, without the ability to login, and modifying the service to run as this user. I believe this should be possible in the packaging for most if not all pre-built package distros in the opensuse builder and hopefully openwrt as well.