Add a session-lock screen and idle management to the Hyprland-native
subdirectory, enabled through the desktop aggregator.
hyprlock draws through the compositor session-lock protocol, themed by
Stylix, with a centered field and clock. Super+X locks directly through a
guarded launch so the key works without the idle daemon.
hypridle locks on idle and powers the displays off, with tunable timeouts,
and locks before every suspend. Lid-close routes through logind to suspend,
which the pre-sleep lock covers, so the lid lands at a locked screen.
