Support for subject verification

[ivan-kripakov-m10]

Is your feature request related to a problem? Please describe.
So, as I understand in CompreFace we have only two options for face verification: using embeddingId or providing two images to compare.
But if we have many photos of the same user (embeddings which are associated with the same subjectName), can't we improve the verification results?
We can, for example, use subjectName for verification and calculate distances between input-embedding and several stored embeddings to avoid more then one round trip to the compreface-api server.

Describe the solution you'd like
Provide API for subject-verification

Describe alternatives you've considered

Additional context