Create a XGBoost binary classification example with hyper-parameters …

…optimization template (jupyter-naas#1260)

* Create a XGBoost binary classification example with hyper-parameters optimization template

Create a recipe for training a XGBoost classifier, including hyper-parameters optimization using grid-search.

* fix: title convention, typo dataseet, and intentation of output parts

Co-authored-by: jravenel <jeremy@naas.ai>