Added i15-1 zebra shutter

[DominicOram]

Fixes DiamondLightSource/crystallography-bluesky#10

Note, also needs DiamondLightSource/mx-bluesky#1742

Instructions to reviewer on how to test:

1. Confirm tests pass

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 99.11%. Comparing base (a832c86) to head (3a2fbb9).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2053   +/-   ##
=======================================
  Coverage   99.11%   99.11%           
=======================================
  Files         327      327           
  Lines       12812    12837   +25     
=======================================
+ Hits        12699    12724   +25     
  Misses        113      113           

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[jacob720]

Looks good