Feature/jk3server

[AlexCS1337]

Description

This adds Jedi Knight: Jedi Academy configuration to LinuxGSM
Based off jk2server configuration with a few differences.
Also updated the port used in the jk2server configuration because it was using the wrong one.

Fixes #2015

Type of change

• Bug fix (a change which fixes an issue).
• New feature (change which adds functionality).
• [* ] New Server (new server added).
• [* ] Refactor (restructures existing code).
• Comment update (typo, spelling, explanation, examples, etc).

Checklist

PR will not be merged until all steps are complete.

• This pull request links to an issue.
• This pull request uses the develop branch as its base.
• [* ] This pull request Subject follows the Conventional Commits standard.
• [* ] This code follows the style guidelines of this project.
• [* ] I have performed a self-review of my code.
• I have checked that this code is commented where required.
• [* ] I have provided a detailed with enough description of this PR.
• I have checked If documentation needs updating.

Documentation

If documentation does need updating either update it by creating a PR (preferred) or request a documentation update.

• User docs: https://github.com/GameServerManagers/LinuxGSM-Docs
• Dev docs: https://github.com/GameServerManagers/LinuxGSM-Dev-Docs

Thank you for your Pull Request!

[dgibbs64]

#3467

[dgibbs64]

Currently this pr is missing the server files of a mechanism to install the server. I have seen using openjk might be a good idea

[AlexCS1337]

@dgibbs64 I've updated and tested recently and it works somewhat but still missing the server binary, added an update script for it but not sure how to get it working, the link for openjk is at https://github.com/JACoders/OpenJK/releases