The script cross-toolchain-helper should be able to generate different image types that are useful for different scenarios.

 - For example:

 Use case 1) a raw or wic image: useful for deploying the image to a SDCard
 Use case 2) a tarball image: useful for deploying the image to a local directory for network (NFS) booting

So in the config of each target board it should be possible to specify which types of images should be generated, which can be more than one type.

The script should be able also to deploy the image generated. This will be used on the bots for automating the deployment after building the images