Search the system path for `program` in `launch.json`

Type: Feature Request

I currently have a launch.json set up for debugging a native Node.js addon on both Linux and OS X with gdb and llvm. Debugging a Node.js addon requires loading the main node executable which in turn dynamically loads the addon which is a shared library. So I have:

"type": "cppdbg",
"request": "launch",
"program": "/usr/bin/node",

which requires the full path to the program being debugged. Both gdb and llvm search the system path when invoking gdb node or llvm node, however the VSCode debugger does not invoke them as it checks that program exists.
Here is my full launch.json - https://github.com/mmomtchev/node-gdal-async/blob/master/.vscode/launch.json

Comienza con la configuración launch.json mostrada en el issue y sigue cómo el flujo de lanzamiento de cppdbg valida el valor de program antes de iniciar gdb o llvm. La tarea estará completada cuando se pueda aceptar y resolver un nombre de programa como node mediante la ruta del sistema, en lugar de requerir una ruta absoluta.