Shubham Mishra

Added more distance_metrics for vector space and also for boolean vector.

2

#### Distance metric reference has been taken from [here](https://scikit-learn.org/stable/modules/generated/sklearn.metrics.DistanceMetric.html) #### Added methods to evaluate sEuclidean and Mahalanobis distance and Jaccard,Matching,Dice,Kulsinki,Rogers Tanimoto,Russell Rao Distance,Sokal Michener,Sokal Sneath distance metrics for boolean vector...