[Server Request] Duke Nukem 3D

## What game server would you like adding?

Duke Nukem 3D via eduke32 (https://www.eduke32.com/)

## Can you link to any tutorials or guides?

The linked .zip contains a NetLauncher-linux64. The instructions there are pretty basic. It's just wants to have an ip address, max player count and frag limit.

The server normally waits until ALL players have joined. This can be skipped by pressing 'Y' while the server is waiting.

I'm not sure if players can join while the match is running. My guess is no (which would make this somewhat unattractive as an additional lgsm server)

## Is the server on Steam?

* [ ] Yes
* [x] No

## Is the server supported on Linux?

* [x] Yes
* [ ] No

The server files can be found here
https://gitlab.com/mossj32/EDuke32-OldMP_Maintenance/-/tags
(use the eduke32-oldmp_release_30)

Only caveat: the server requires the original duke3d.grp file. Unfortunately I don't know of it can 'just' be shared.