Process for adding new labs should be documented

[cwpearson]

Broadly:

• each lab is in its own folder, with its own self-contained resources. Any folder should stand alone to facilitate reuse among our collaborators
• create a standalone .cu source file (or as close to a single file as practical) with the skeleton code.
  • use either GNU make or CMake to drive configuration/compilation
  • do not commit the solution to this repository, as we will have to edit the history to remove it, which is annoying.
  • Strive to report any errors that are unrelated to the teaching goal of the lab, and report them early and with a clear error message. the goal is for the students to focus on the target lab content and not have to struggle with anything else
• Create a README.md for the lab
• create a corresponding solution in github.com/illinois-impact/gpu-algorithms-labs_solution