Shape matching API

[AlexanderGeiger]

As mentioned in issue #72, we would like to implement a feedback integration module in Orion which uses subsequence shape matching. Basically any suitable method could be used, therefore we should decide how these methods can be implemented and connected through an API in order to make them interchangeable.

Since we already rely on MLPrimitives for the unsupervised anomaly detection part, it would make sense to implement the shape matching methods as primitives as well.

Some things we should discuss:

• Inputs and outputs to these primitives, so that we can easily integrate them into the feedback component of Orion
• Where to store these primitives (Orion or MLPrimitives)