Add attach task for Node to VSCode launch config
Add attach task for Node to VSCode launch config

Allows to debug node / mocha from the command line using the
--debug and --debug-brk switch.

See https://code.visualstudio.com/docs/editor/debugging

Change-Id: I0b568b3a51072a4df7f7d7af01854acdccf38c88

eclipsesource/tabris-js,eclipsesource/tabris-js,eclipsesource/tabris-js