Implement Acer RGB control daemon and CLI

- Removed acer-rgb.cpp and replaced it with acer-rgb-cli.cpp for command-line interface functionality.
- Added acer-rgbd.cpp to implement a daemon that manages RGB settings for keyboard, lid, and button devices.
- Introduced a socket communication mechanism via acer-rgb.sh for sending commands to the daemon.
- Created service and socket files (acer-rgbd.service and acer-rgbd.socket) for systemd integration, allowing the daemon to run as a service.
- Implemented state persistence for RGB settings in /var/lib/acer-rgbd/state.txt, enabling restoration on boot.

.gitignore

@@ -1,2 +1,2 @@
-acer-rgb
-rgb
+rgb
+acer-rgb-cli