Changelog:
- Addition of port forwarding for accessing services inside the network namespace (e.g. transmission-daemon) - see #24
- Addition of TCP proxy server for forwarding network namespace ports to the host machine (using basic_tcp_proxy crate)
- Addition of keep-alive option to keep namespace open even if process launched is terminated
- Auto-detection of protocol (OpenVPN or Wireguard) when using custom config file - thanks to @dlemel8
- Correct handling of relative paths for custom config files - thanks to @meldafert