devtool: ide-sdk launch.json per recipe only

devtool: ide-sdk launch.json per recipe only

If multiple recipes are processed at once, the launch.json and the
tasks.json of the second recipe contains also the configurations for the
binaries of the first recipe.

Example:
  devtool ide-sdk powertop cmake-example oe-selftest-image
generated a launch and a tasks configuration for the cmake-example
recipe which also offers debugging the powertop binary.

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>