feat(newserver): add FabricMC Server

[Ceddicedced]

Description

Fabric is a modular modding toolchain targeting Minecraft 1.14 and above, including snapshots.

I took #3292 as an example.

Type of change

• [ ] Bug fix (a change which fixes an issue).
• [ ] New feature (change which adds functionality).
• [X] 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.
• [X] This pull request uses the develop branch as its base.
• [ ] This pull request Subject follows the Conventional Commits standard.
• [X] This code follows the style guidelines of this project.
• [X] I have performed a self-review of my code.
• [X] I have checked that this code is commented where required.
• [X] I have provided a detailed with enough description of this PR.
• [X] 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!

[h3o66]

Would it be possible for you to rebase this branch on the latest release ?

[Ceddicedced]

I will look into this. Thanks for your feedback

[h3o66]

I've now checked all your comments and updated my changes to the latest version of the develop branch

looks better, but only 2 litte changes are needed

[Jerry1098]

Is there any update on this and is this going to be merged soon?

[meguroyama]

Hi, I'm interested in this merge soon. Is it stalled ?

[whytf]

Hi, I'm interested in this merge soon. Is it stalled ?

I'm interested as well.