Add initial Gentooo packaging

gentoo/files/pgmon.openrc

@@ -0,0 +1,22 @@
+#!/sbin/openrc-run
+
+extra_started_commands="reload"
+
+agent_name=${RC_SERVICE#pgmon.}
+agent_name=${agent_name:-pgmon}
+
+command="/usr/local/bin/pgmon"
+command_args="--server --config /etc/pgmon/${agent_name}.cfg"
+command_user="zabbix:zabbix"
+
+pidfile="/run/pgmon/${agent_name}.pid"
+
+start_pre() {
+	checkpath -d "/run/pgmon"
+}
+
+reload() {
+        ebegin "Reloading ${RC_SVCNAME}"
+        start-stop-daemon --signal HUP --pidfile "${pidfile}"
+        eend $?
+}