Make ImgProcessing injectable
One type of plugin that developers may want to create is an image processing method. Currently, the only solution is to contribute directly to the pickcells-img package.
There should be a way to create a Module of type Image filter or something similar which could be injected at runtime so this becomes available to the user.
This will probably require to create a PipelineBuilderFactory in the api which would get injected with ImgProcessingPackages.