Add "AutoTest.DebugSelectedNoDeploy" shortcut

Hi,

One test of our test suite crashes only when it is launched with other tests using shortcut "AutoTest.RunSelectedNoDeploy".

It does not crash when it runs alone. It also never crashes if I use "ProjectExplorer.Run/Debug*" shortcuts.

That's why a new "AutoTest.DebugSelectedNoDeploy" shortcut would be very convenient to help me to investigate this issue.

By quickly seeing the QtCreator autotest plugin sources, it seems everything is available to implement this feature, but I may be wrong. Unfortunately I have no time to compile QtCreator at the moment.

Thank you and have a nice day.