Create abstract generic interface for a face match

[typelogic]

Current Behaviour

This change is to accommodate after changes in idpass/idpass-lite#20

Expected Behaviour

Changes to accommodate the abstracted face match function

Steps to Reproduce the Problem

1 Step through the face match test case
2. Observe that the face match function is tied to the Dlib implementation

Context

Create needed API to accommodate the face match abstraction.

• Version:
• Platform: Linux, Android, IOS, MacOS, Windows