Allow attaching lambda functions, in this case to create a lambda that would convert image types and possibly resize/optimize

Image optimization is a checkbox on cloudfront, so that part is covered by AWS

but there are more customizable options that would be helpful and being able to add a lambda function of any kind to the cloud functionality would expand the space immensely

In this particular case what is need is:

1. convert file types to webp from png/jpeg/jpg as they are uploaded

2. possibly resize them to make them fit to a certain aspect ratio

I've already solved this issue outside of the spryker cloud: https://github.com/ed42311/serverless-lambda-image-optimize