Continuous integration setup

[azonenberg]

We should have nightly Windows and Linux builds logging to a CI server.

[azonenberg]

@bvernoux @nshcat can one of you investigate these Windows build failures?

https://github.com/kench/scopehal-apps/actions/runs/319193878

[azonenberg]

@kench looks like your OOM issue is the result of building with "make -j" and no cap on the number of jobs. If you have 192GB of RAM on your workstation like I do this is fine, but GitHub's build system clearly has less :)

[kench]

@azonenberg Can fix. While we're on the topic of make -j, can you update the glscopeclient manual?

It's going to be frustrating for new users when their Windows builds fail because the instructions assume that they have 192GB of RAM installed.

[azonenberg]

Updated in ngscopeclient/scopehal-docs@549cf1e