Add CI for installed tests
Now that installed tests are working with Meson, we should run them as part of the CI, to ensure that they all have all the right things installed and are using the right paths.
This is a follow-up to !245 (merged).
Now that installed tests are working with Meson, we should run them as part of the CI, to ensure that they all have all the right things installed and are using the right paths.
This is a follow-up to !245 (merged).