Consolidate and update tutorials for HSP2>0.9.3

[aufdenkampe]

Presently the HSP2 repo contains a wide variety of tutorials and demos as Jupyter Notebooks, which have been developed at different time periods and different versions of HSP2, and which have overlapping content that does not clearly build from one tutorial to the next.

Our objective is to consolidate and update all Jupyter notebooks, to build a clear progression of hands-on tutorials that demonstrate increasing complexity of running and using HSP2.

[aufdenkampe]

We have:

• Renamed the HSP2Notebooks folder to examples, to better comply with github conventions and also to open it up to other kinds of examples.
• Consolidated several tutorial notebooks into a new 1_Intro_to_HSP2.ipynb tutorial.
  • Deleted old notebooks that didn't have additional content of value.
  • Pointed to test10 input files that are in the tests folder, and deleted duplicate files in examples
• Moved old notebooks with valuable content into a new examples/archives folder.
  • We'll incorporate valuable content from these in future releases.
• Created a new 2_DataVisualizationDemo.ipynb notebook, that leverages HoloViz for visualizing HSP2 output data.

Closing this issue for now, recognizing that more work still needs to be done for future releases.