Digital Business Card, part 1

[severinbeauvais]

This ticket is to capture the work (PRs, release) for the Digital Business Card project, including:

• Filings UI changes
• Legal API changes
• Queue Services changes

This work is continued in #18394.

[severinbeauvais]

@amanji , I created this ticket to track the work done from Entity team's point of view. I also created this release ticket and this release report to track the release steps/status.

Please let me know what environment config/keys need to be set up so I can add them to the release ticket. Thanks!