Rename appdata to metainfo
See https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html
chapter 2.1.2 "Filesystem locations"
Signed-off-by: Lars Wendler <polynomial-c@gmx.de>
Directory for automated tests to test the engine.
Run `ctest` in the root directory of this repository to run all tests.
Run `ctest -R <test name>` to run only the test with the given name.
This requires you to have CMake.