Add i09-2 stage using StandardMovable

[oliwenmandiamond]

Fixes #2107

Instructions to reviewer on how to test:

1. Check implementation makes sense
2. Refactor of existing logic is okay
3. Tests pass
4. dodal connect works for i09-2

Checks for reviewer

• Would the PR title make sense to a scientist on a set of release notes
• If a new device has been added does it follow the standards
• If changing the API for a pre-existing device, ensure that any beamlines using this device have updated their Bluesky plans accordingly
• Have the connection tests for the relevant beamline(s) been run via dodal connect ${BEAMLINE}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.15%. Comparing base (c8aa742) to head (bd374a7).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2093   +/-   ##
=======================================
  Coverage   99.15%   99.15%           
=======================================
  Files         349      352    +3     
  Lines       13681    13725   +44     
=======================================
+ Hits        13565    13609   +44     
  Misses        116      116           

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[Relm-Arrowny]

A few minor things.

[Relm-Arrowny]

Just one last thing.

[Relm-Arrowny]

Perfect