Add HPC section

[mhasoba]

Add an HPC section these materials, lead by @icgk523 , including the HPC week materials developed by @jrosindell

[mhasoba]

@icgk523 , what is the status of this issue?

[mhasoba]

@icgk523 , please check HPC branch and create pull request for merge into main.

Also, eliminate HPC directory on main branch after tranferring/integrating content