Feature: Added option for hibernate between sleep and brightness down (#867) (closes #866)

Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/867
Reviewed-by: AnErrupTion <anerruption@disroot.org>
Co-authored-by: ebits <tspamiitesh@gmail.com>
Co-committed-by: ebits <tspamiitesh@gmail.com>

src/config/Lang.zig

@@ -20,6 +20,7 @@ err_domain: []const u8 = "invalid domain",
 err_empty_password: []const u8 = "empty password not allowed",
 err_envlist: []const u8 = "failed to get envlist",
 err_get_active_tty: []const u8 = "failed to get active tty",
+err_hibernate: []const u8 = "failed to execute hibernate command",
 err_hostname: []const u8 = "failed to get hostname",
 err_lock_state: []const u8 = "failed to get lock state",
 err_log: []const u8 = "failed to open log file",
@@ -59,6 +60,7 @@ err_xauth: []const u8 = "xauth command failed",
 err_xcb_conn: []const u8 = "xcb connection failed",
 err_xsessions_dir: []const u8 = "failed to find sessions folder",
 err_xsessions_open: []const u8 = "failed to open sessions folder",
+hibernate: []const u8 = "hibernate",
 insert: []const u8 = "insert",
 login: []const u8 = "login",
 logout: []const u8 = "logged out",