README:
Create a C/C++ Application launch as normal, and in the Launch
Configuration dialog click "Select other..." at the bottom/center
and selecting GDB (DAP) Debug Process Launcher
(you can't do this in the LaunchBar's dialog as it does not support
changing the launcher).
Then debug as you normally do (with less features so far :-)
Change-Id: Ia36acedf064b3774c6ac2a863880eaf7efe9c399