Add triage-policies for bugbot

Taken from libinput with some of the things removed or slightly changed
to apply to udev-hid-bpf. This is the basic set of bugbot
commands that we'll likely need here.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Part-of: <libevdev/udev-hid-bpf!180>