Reduce size of jar for utbot-summary module

[amandelpie]

Description

Existing solution requires in utbot-summary import of ML library with some megabytes of dependencies, but in reality it uses in one place to cluster the test cases based on path executions

Expected behavior

Custom implementation of dbscan or hdbscan or another clustering algorithm

[amandelpie]

Also need to make some benchmarks and profile dbscan usage, probably it could be improved from the baseline usage