Add tests and github workflow for parsing logs

[andrewiggins]

Add tests for parsing logs and a github workflow that runs the tests on push.

I checked in the logs of running the examples in the repo on my local machine. However, the paths in the logs are absolute paths to the location of the files on my machine (/tmp/deoptigate). So the tests replace the paths of the source files with the local path to the source files before running the logs through deoptigate.

[thlorenz]

Wow super nice .. this repo was in dire need of tests. Which would also make it possible to refactor to something a bit more maintainable, maybe even typescript.
So thanks a lot!

Also looks like you didn't touch any of the lib code .. so I got no objection to merging this. Probably wanna squash it though.

So I made you collaborator.

Please merge to master following this guide.
I will then version and publish to npm.

Thanks.

[andrewiggins]

Now that GitHub has a squash merge button, would it be okay to use that button to perform the squash merge? (Asking cuz your collaborator guide suggests please do not use the green button on github).

[andrewiggins]

Going to go ahead an squash merge this. Obviously let me know if anything looks wrong so I can fix it!