Draft: daemon: watch for only dpms events

If we request all events, ddcutil initializes the XEvent monitor, which then connects with Xwayland socket provided by KWin on the Wayland session.

Later on if kwin_wayland crashes, X connection breaks and powerdevil safely(!) exists, and never restarts, which makes rest of power management not work. On phones this means that you can not wake your device up if kwin crashed when screen was off, or battery draining because automatic suspend stuff from powerdevil was no longer running.