Run CMake tests in the CI

[chandryan]

We could run the unit tests in the CI with CMake, taking the workflows from Mp11 as example.

CMake has the benefit of better IDE integration, for example with VS Code.

Then we could remove test/Jamfile.v2 and only have to maintain the CMake version for running the tests.
What's your thought on this @henry-ch ? Do you require the tests to run with b2?
As b2 is the main build/test system and it allows more fine-granular settings, it would be a better alternative to look into using the test Jamfile in CMake (via BoostTestJamfile.cmake) instead.