OpenRC service and support for more inits (#368)

Add OpenRC service and support for other init services

Co-authored-by: Jonathan <78560204+wncry@users.noreply.github.com>
Co-authored-by: MadcowOG <null>
Co-authored-by: MadcowOG <88654251+MadcowOG@users.noreply.github.com>

res/ly-openrc

@@ -0,0 +1,38 @@
+#!/sbin/openrc-run
+
+name="ly"
+description="TUI Display Manager"
+
+## Supervisor daemon
+supervisor=supervise-daemon
+respawn_period=60
+pidfile=/run/"${RC_SVCNAME}.pid"
+
+## Check for getty or agetty
+if [ -x /sbin/getty ] || [ -x /bin/getty ];
+then
+    # busybox
+    commandB="/sbin/getty"
+elif [ -x /sbin/agetty ] || [ -x /bin/agetty ];
+then
+    # util-linux
+    commandUL="/sbin/agetty"
+fi
+
+## Get the tty from the conf file
+CONFTTY=$(cat /etc/ly/config.ini | sed -n 's/^tty.*=[^1-9]*// p')
+
+## The execution vars
+# If CONFTTY is empty then default to 2
+TTY="tty${CONFTTY:-2}"
+TERM=linux
+BAUD=38400
+# If we don't have getty then we should have agetty
+command=${commandB:-$commandUL}
+command_args_foreground="-nl /usr/bin/ly $TTY $BAUD $TERM"
+
+depend() {
+         after agetty
+         provide display-manager
+         want elogind
+}