Add Face Comparison Block

[yeldarby]

Description

Demo of adding a custom API block to Workflows using Seventh Sense for face comparison.

Type of change

• [x] New feature (non-breaking change which adds functionality)

How has this change been tested, please provide a testcase or example of how you tested the change?

Just locally so far (using it in a demo).

Any specific deployment considerations

No

Docs

• [ ] Docs updated? What were the changes: Not yet; will do before launch if we decide to move forward with this.

[PawelPeczek-Roboflow]

@yeldarby let us know when this is ready, looks good, although I do not know how to get access to the API key, form in the login page seems to be broken

[yeldarby]

Closing for now since stale; will re-open if we want to revive it.