David Frank authored Jan 17, 2021 and Tobias Lasser committed Apr 08, 2021

Add driver and support for testing across modules. Currently,
no real checks are made that something is actually a regression.

These tests can be used for one check realistic scenarios, that
solver reach convergence (or at least some norms get minimized).
Second some performance data is gathered, which should make this useful
to decide if a change actually speeds up anything.

Basic integration test setup to run full reconstructions. This is a
first step into the direction of having more comprehensive integration
tests, which are machine tested and run.