test: enable timers test
Work in progress. Do not merge.
But do feel free to comment!
Add faketime to tools and enable test/timers in make test and make test-ci.
Fixes: https://github.com/nodejs/node/issues/4404
/cc @misterdjules @Fishrock123
Didn't touch vcbuild.bat because faketime
doesn't run on Windows. As it is, we'll probably have to skip some platforms. Will run CI to see which ones faketime
successfully builds on...