Interactive streaming results

[TinoDidriksen]

It should be possible to stream results to the interface and allow interactions with it while the test is running, instead of having to wait for the full run to be done. May require storing results in SQLite temporarily.

[TinoDidriksen]

A potential problem with this is that users may make corrections and rebuild during a run, which would mean their changes would affect pipes started in the middle. A workaround is to keep the pipes open and reuse, and open all potential pipes up front.