Ticket8631

[Tom-Willemsen]

Closes ISISComputingGroup/IBEX#8631
Closes ISISComputingGroup/IBEX#8628

Scope expanded a bit but:

• Migrate user-office auth to REST api as required rather than SOAP
  • As far as I can tell, BusApps are not turning off SOAP to the scheduler service, just the auth side as far as I could tell. But it will now be easier to migrate that side over too if necessary.
• Make it all work on modern python versions on dev machines (and ensure CI checks this too)
• Make it work with MySQL 8.4
• Refactored to use something closer to best-practice setup
  • Main cli moves to a "project script" - i.e. something you can directly execute after installing this into a venv
• Move CI to GHA as this lets us easily test against a wider range of python versions etc
• Ruff
• Didn't do pyright / type-hinting much in this PR as it's quite painful if we're still stuck on python 3.8. instead put that in a different PR, but it's not viable to merge that until we can update python versions (I really don't want to backport loads of typing stuff to old syntaxes)

Docs updated at https://github.com/ISISComputingGroup/ibex_developers_manual/wiki/Experimental-Database#deployment

Will need to do the "deployment" steps on the central server once this is merged