setup_rules.sh: fails if `sudo` is not available.

[Kangie]

Describe the bug
Install udev rules

To Reproduce
Steps to reproduce the behavior:

1. Don't have sudo available
2. Run ./qFlipper-x86_64-1.3.3.AppImage rules install (or similar...)

./qFlipper-x86_64-1.3.3.AppImage rules install
You will now be asked for SUDO password.
/tmp/.mount_qFlipp5BMzFu/AppRun: line 37: sudo: command not found
Something went wrong. Device rules may have not been installed correctly.

Expected behavior

1. Support doas
2. Support running with pre-elevated permissions (i.e. check if already uid 0)