Implement alerts for UDC complete, baton release and UDC start

[rtuck99]

Fixes the remaining alerts in

• Do alerts for things other than errors #1180

Link to dodal PR (if required): #N/A
(remember to update pyproject.toml with the dodal commit tag if you need it for tests to pass!)

Hyperion will now raise an alert on the following events:

• UDC Start (i.e. when Hyperion acquires the baton and begins processing instructions)
• UDC Complete (i.e. when Hyperion receives an empty instruction list from Agamemnon, indicating there are no more instructions to process)
• When Hyperion releases the baton. When Hyperion sends this alert it will indicate which user requested the baton from Hyperion, if any, in order to help distinguish between when Hyperion finishing naturally and Hyperion pausing due to a baton transfer.

Instructions to reviewer on how to test:

1. Test pass
2. When running in UDC mode, the above alerts are issued

Checks for reviewer

• Would the PR title make sense to a user on a set of release notes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.75%. Comparing base (6725bd6) to head (7bbd2a4).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1257      +/-   ##
==========================================
+ Coverage   89.74%   89.75%   +0.01%     
==========================================
  Files         128      128              
  Lines        7925     7933       +8     
==========================================
+ Hits         7112     7120       +8     
  Misses        813      813              

Components	Coverage Δ
i24 SSX	75.60% <ø> (ø)
hyperion	97.73% <100.00%> (+<0.01%)	⬆️
other	97.96% <ø> (ø)

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[DominicOram]

Great, thanks. Minor nit pick but otherwise fine

[DominicOram]

Nit: I would be a bit more specific here, mention that the Agamemnon queue is empty or something