Lich support

Lich acts as a mediator between a frontend and the server. It just requires a client to be able to specify a host, port, and key on the command line (which Warlock can do), or to be able to connect to a custom server (which Warlock can't do).

As of November 2023, Lich requires a minor change to support launching native frontends on Linux and MacOS, but it works fine on Windows. See this PR for more info: https://github.com/elanthia-online/lich-5/pull/508

To use Warlock with Lich, launch Lich in your normal manner, in the "Manual Entry", pick your character as normal, check "Custom launch command", then enter /opt/warlock3/bin/warlock3 --host localhost --port %port% --key %key% (for Linux, the path for Windows and MacOS will be slightly different).