add pagekite link status to cgi script remote access info

refs DSD-8960

example response looks like: { "success": true, "code": 0, "message": "OK", "data": { "remoteaccess": true, "pagekite": { "version": "0.91.200718C", "status": "flying", "status_code": 40, "pid": 4824, "update_ts": 1602086393 } }

}