horst: Update to version 5.1 and add init script

Update to latest stable version and add init script and config file to start
horst in server mode as a service.

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

net/horst/horst.init

@@ -0,0 +1,22 @@
+#!/bin/sh /etc/rc.common
+
+START=94
+
+USE_PROCD=1
+PROG=/usr/sbin/horst
+
+start_service() {
+	config_load horst
+	config_get dis "init" 'disabled' '0'
+	[ "$dis" == "0" ] || exit
+
+	config_get intf "init" 'interface' 'wlan0'
+	config_get scan "init" 'scan' '0'
+	[ "$scan" == "0" ] && scan='' || scan="-s"
+
+	procd_open_instance
+	procd_set_param command $PROG -q -i $intf $scan -N
+	procd_set_param netdev $intf
+	procd_set_param respawn
+	procd_close_instance
+}