pingcheck: Add new package

Pingcheck is a daemon for OpenWRT which checks the online status of individual
network interfaces and makes this information available via UBUS and by
triggering "online" and "offline" scripts.

It is maintained at: https://github.com/br101/pingcheck

Signed-off-by: Bruno Randolf <br1@einfach.org>

net/pingcheck/pingcheck.init

@@ -0,0 +1,15 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+
+USE_PROCD=1
+PROG=/usr/sbin/pingcheck
+CONFFILE=/etc/config/pingcheck
+
+start_service() {
+	procd_open_instance
+	procd_set_param command $PROG
+	procd_set_param file $CONFFILE
+	procd_set_param respawn
+	procd_close_instance
+}