Support editing metadata `remarks`

[Bronstrom]

trafficstars

Description

As a catalog author, I want to edit remarks in regard to metadata.

Acceptance Criteria

• metadata remarks (markup-multiline) can be edited and saved within the React library
• After saving changes, the remarks field is sent to the REST API following the specification using the best available method

Proposed Solution

It is likely best to either (a) add new routes to the API specification to support metadata editing; or (b) use the PATCH /{documentType}/{id} routes

Additional Notes

No response

Implementation

• [ ] I can (or plan to) submit a pull request to implement this
• [ ] Implementing this may result in a breaking change

[brian-ruf-ezd]

Depends on #710

[brian-ruf-ezd]

This issue will not deal with full markup-multiline editing. Either that will be handled by a separate ticket dealing with prose, or this editing will only be plain text.