added Example for in Situ, using Catalyst

Added Catalyst Example using Jupyter to Repo. Shows two notebooks, one a very basic configuration, the ther expanded, with more usefull explanations.

Added to 002-Methods/003-Visualization into folder 001-InSitu/001-Catalyst

002-Methods/003-Visualization/001-InSitu/001-Catalyst2JupyterLab-Tutorial/CatalystEnabledSimulation/README.md

+This example is based on https://github.com/Kitware/ParaView/tree/v5.8.0/Examples/Catalyst/PythonFullExample
+with only small changes to their code.
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