Add i06-1 magnets

[oliwenmandiamond]

Fixes #2120

Instructions to reviewer on how to test:

1. Check implementations make sense
2. Check tests coverage is sufficient
3. Check doc strings for devices make sense
4. Check dodal connect i06-1

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 99.18%. Comparing base (c5a4fc3) to head (8d2ce05).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2115      +/-   ##
==========================================
+ Coverage   99.16%   99.18%   +0.02%     
==========================================
  Files         354      360       +6     
  Lines       13848    14227     +379     
==========================================
+ Hits        13732    14111     +379     
  Misses        116      116              

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[Relm-Arrowny]

I gone through it roughly, I have a few questions