1034 pressure cell openseq type

[barnettwilliam]

Fixes #1034

Instructions to reviewer on how to test:

1. dodal connect p38
2. Confirm the pressure cell is in the list of connected devices

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 97.68%. Comparing base (cdc6652) to head (6c70538).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1037   +/-   ##
=======================================
  Coverage   97.68%   97.68%           
=======================================
  Files         160      160           
  Lines        6599     6599           
=======================================
  Hits         6446     6446           
  Misses        153      153           

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[DominicOram]

Looks good, just one comment

[DominicOram]

Must: I don't think you can do this. You need to stick to the function definition of Movable in case we're calling this with a keyword arg e.g device.set(value=10). The reason the IDE isn't picking this up is that you also need ValveControl to inherit from Moveable. Same with FastValveControl