Tests crash on start on Windows with CMake

Since recently, tests crash on exit. The reason is that they do not find the Qt Creator libs.

ced96a480d51fd6eb6e30d0141cb427f00ef234e moves the binaries out from Qt Creator's "bin" directory. That is done in the qmake and Qbs based build systems as-well, and it certainly makes sense. Howeverm in the CMake case the "bin" path is missing in the run environment's PATH.

See discussion on: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/347665