small update to getDataSet function

Merge branch 'main' of github.com:danieltabrizian/BigDataEnAI_workshop_java_weka

Some minor refactoring

Merge remote-tracking branch 'origin/main'

UPDATE MERGE

UPDATE

Added recommendations

removed weka jar file

Clustering and Linear Regression examples.

RandomTrees

Added jar to maven

Classification

Added maven support

Template

Initial commit