Add helpdesk-system deployment

[RealOrangeOne]

Summary

This will deploy https://github.com/srobo/helpdesk-system/, for use at Helpdesk.

Code review

Testing

• applied the configuration locally
• manually validated the new behaviour
• deploy to production during development and hope for the best

Links

Hosting: https://studentrobotics.slack.com/archives/CMQ49PXPG/p1711821320022749

Infrastructure request: https://studentrobotics.slack.com/archives/C02BXUAK33M/p1711823023865169

To do

• Pin to a specific commit (pending Updates for SR2024 helpdesk-system#62 merging)

[PeterJCLaw]

Quick first pass. Generally looks good, thanks for going this route. Mostly questions, though also some presumed accidental errors.

[PeterJCLaw]

Approved with the expectation that the upstream version will be pinned before merging, to a commit which is on main in that repo and contains the relevant security updates.

Meta: in future please develop in this repo locally first, rather than deploying untested configurations directly to production. The setup here aims to make that as easy as possible, though if there are any points of friction please do raise issues so they can be addressed.