Harmony 1978 - Add/create label from jobs page of workflow ui

[vinnyinverso]

Jira Issue ID

HARMONY-1978

Description

Allows the user to add/create a label from jobs page of workflow ui.

Local Test Steps

• select some jobs from http://localhost:3000/workflow-ui
• click the "label" dropdown
• type a label name in the dropdown (that does not already exist)
• click the create/apply link
• validate that the label was applied/created

PR Acceptance Checklist

• Acceptance criteria met
• Tests added/updated (if needed) and passing
• Documentation updated (if needed)
• Harmony in a Box tested? (if changes made to microservices)

[chris-durbin]

Tested out locally. The basic functionality looks good and works as expected. There were a few things I found when testing:

1. When creating a new label that label is not immediately available in the auto-complete for the filter box (on the left side of the page). Reloading the page makes that label available.
2. I pasted in text that would have resulted in more than 255 characters, but my label was created successfully. I'm guessing it must have truncated? It's probably worth a message in the toast if it truncated the label to 255 characters.
3. Filtering on a really long label leads to text that crosses the full width of the screen.
4. Attempting to filter on a really long label isn't working (the results are not filtered).

3 and 4 are unrelated to this PR - probably should open a bug ticket.