routing-yggdrasil: add package

Yggdrasil builds end-to-end encrypted networks with IPv6. Beyond the
similarities with cjdns is a different routing algorithm. This
globally-agreed spanning tree uses greedy routing in a metric space.
Back-pressure routing techniques allow advanced link aggregation bonding
on per-stream basis.  In turn, a single stream will span across multiple
network interfaces simultaneously with much greater throughput.

Authored by: William Fleurant <meshnet@protonmail.com>
Signed-off-by: Paul Spooren <mail@aparcar.org>

net/yggdrasil/files/yggdrasil.init

@@ -0,0 +1,33 @@
+#!/bin/sh /etc/rc.common
+
+START=90
+STOP=85
+
+USE_PROCD=1
+
+start_service()
+{
+	[ -f /etc/uci-defaults/yggdrasil ] && ( . /etc/uci-defaults/yggdrasil )
+
+	procd_open_instance
+	procd_set_param respawn
+	procd_set_param command /usr/sbin/yggdrasil -useconffile /etc/yggdrasil.conf
+    procd_set_param command /bin/ash -c "/usr/sbin/yggdrasil -useconffile /etc/yggdrasil.conf | logger -t yggdrasil"
+
+	procd_close_instance
+}
+
+stop_service()
+{
+	killall yggdrasil
+}
+
+reload_service()
+{
+	restart
+}
+
+service_triggers()
+{
+	procd_add_reload_trigger yggdrasil
+}