CI for pygwinc

Now that we have a CLI and test suite, we should create a pygwinc CI that takes advantage of them.

mentioned in commit e959ada0

An initial CI is now working that just renders a figure for the README.

@jameson.rollins Any news on accessing matlab within the git.ligo.org CI runners?

Maybe an easier approach for gitlab is to have a .mat file of cached results from matgwinc, against which pygwinc can be tested.

We have a basic CI now that runs the comparison tests, although the CI is currently not failing on fail of the comparison because we have some outstanding differences to resolve.

closed