Move and rename attach metadata

[callumforrester]

Fixes #ISSUE

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}

[stan-dot]

@callumforrester does this need to be tested on the beamline before merging?

[callumforrester]

@stan-dot No, an approval from someone either than the two of us is all that's needed