Basic test suite

[adampbeardsley]

I think we shy away from actually implementing a test suite because it's a large task. But maybe we can implement something that's relatively simple just to get the structure there, and build on it.

What is the bare minimum?

• Automate building/installing bifrost (bifrost itself does this with travis, so we can lean on that)
• Set up test structure so something runs
• Run tests with every commit? Or maybe every PR that's opened?
• Require passing to merge

What's the right service to use? travis? github actions? Do it ourselves on intrepid?

[jaycedowell]

For bifrost we use a combination of travis and jenkins. Travis is easy to setup but we use it for the CPU-only tests. Jenkins handles everything GPU related.