Optimization of k-means initialization

[Hakdag97]

• Implementation of the "k-means ||" initialization.
• Further imprvement: additionally implement for k-medians

[github-actions]

Branch features/1674-Optimization_of_k-means_initialization created!

[github-actions]

This issue is stale because it has been open for 60 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 60 days since being marked as stale.