Added authenticate_heartbeats and authenticate_new_work_conns
This option allows users to specify where they want assets to be loaded from, like the "assets_dir" option that already exists for frps. This allows library users to use the admin panel without having to bundle assets with statik.
support disable_log_color for console mode
English Grammar Typo
support health check and code refactor
typo fix
Proxy names specified in 'start' params divided by ',' will be started. If it is empty or not defined, all proxies will be started.
if login_fail_exit is false, when frpc first login to server failed, it will continues relogin to server every 30 seconds.