Can we parallelize parts of the pipeline?

[mauricioaniche]

Do we benefit from this? Code checks can run in one thread, and meta tests can run in parallel with pitest, for example.

If we do this, this has to be enabled or disabled via flag, as weblab runs on a single core, and probably won't benefit from it.

[mauricioaniche]

WebLab runs on a single core, this might be a very hard feature to implement with very little gains.