Add DAAC tutorials

[jules32]

Capetown, South Africa, with Michele Thorton and Rupesh Shrestha:

https://ornldaac.github.io/bioscape_workshop_sa/intro.html

[jules32]

Add NSIDC tutorial as option for setting up EC2 on AWS https://nsidc.org/data/user-resources/help-center/accessing-nasa-earthdata-cloud-jupyterlab-ec2