chore: move openwrt init script to emissary-firmware project

misc/packaging/openwrt/emissary-agent.init.sh

@@ -1,20 +0,0 @@
-#!/bin/sh /etc/rc.common
-
-USE_PROCD=1
-START=50
-STOP=50
-
-start_service() {
-  local config_file="/etc/emissary/agent.yml"
-  procd_open_instance emissary-agent
-  procd_set_param command /usr/bin/emissary
-  procd_append_param command --workdir /usr/share/emissary
-  procd_append_param command --config "$config_file"
-  procd_append_param command agent run
-  procd_set_param respawn ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5}
-  procd_set_param file "$config_file"
-  procd_set_param stdout 1
-  procd_set_param stderr 1
-  procd_set_param pidfile /var/run/emissary-agent.pid
-  procd_close_instance
-}