This patch adds pwalarmd, a daemon which provides alarm clock
services with custom notification support and live command-line
configuration editing (achieved through pwalarmctl, which will
be requested for addition separately).
This patch does not add a service file, as pwalarmd is meant to
be run in user mode. Home-Manager support will be added separately
later for running pwalarmd under systemd/with declarative
configuration.
Signed-off-by: Amy Parker <amy@amyip.net>
