feat(hldmserver): add support for the fastdl command

[Flambe]

Description

This allows the fastdl command to be used on hldm servers. It also disables bzip2 compression for hldm as these servers do not support downloading the compressed files.

Fixes #4471

Type of change

• [ ] Bug fix (a change which fixes an issue).
• [X] New feature (a 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.

• [X] This pull request links to an issue.
• [X] This pull request uses the develop branch as its base.
• [X] 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 enough description of this PR.
• [X] I have checked if documentation needs updating.

Documentation

https://github.com/GameServerManagers/LinuxGSM-Docs/pull/100

Thank you for your Pull Request!

[Flambe]

The static code analysis fails on the second half of the echo which I haven't touched, so I do not believe that this is related to my PR? $(fn_human_readable_file_size ${filesizetotal} 0)

If I'm wrong or you want it fixed regardless, I can push a fix up.