Implement Affiliation metric

[LouisCarpentier42]

Implement the affiliation based metric [1]. This metric will consider the anomalous events (subsequences of consecutive anomalous observations). For each ground truth anomaly is a so-called affliation zone created, in which the distance of the ground truth anomaly to the detected anomalies forms the basis of the performance.

[1] Huet, Alexis, Jose Manuel Navarro, and Dario Rossi. "Local evaluation of time series anomaly detection algorithms." Proceedings of the 28th ACM SIGKDD Conference on Knowledge Discovery and Data Mining. 2022.