DOC add MLJAR AutoML in related projects (scikit-learn#29728)

Co-authored-by: Guillaume Lemaitre <guillaume@probabl.ai>

Author: pplonski

doc/related_projects.rst

@@ -46,6 +46,10 @@ enhance the functionality of scikit-learn's estimators.
   It incorporates multiple modeling libraries under one API, and
   the objects that EvalML creates use an sklearn-compatible API.
 
+- `MLJAR AutoML <https://github.com/mljar/mljar-supervised>`_
+  Python package for AutoML on Tabular Data with Feature Engineering, 
+  Hyper-Parameters Tuning, Explanations and Automatic Documentation.
+
 **Experimentation and model registry frameworks**
 
 - `MLFlow <https://mlflow.org/>`_ MLflow is an open source platform to manage the ML