No, I do not have this file! I am not really good with Maven- so I had a look at how the other modules are configured. They all do not have this file.
I used IntelliJ Features to genarate the modules and IntelliJ put them direct under the project-node in the root pom and not under profiles->profile (default) where the other modules are.
So I just moved them there and added the following lines to shared-lib-component.xml
Now the package is generated, and the jar-file of my integration-module is contained in the shared-lib folder ( I will add that for migration later).
This modules contain background-tasks to import data from external sources. Integration is used by a scheduler-job to fetch data from a RSS-Feed and migration is used by a groovy-script to import data from the previous used cms.
I did not test it yet - but I think it should work.
If there are better approaches with brxM , I am very interested to learn from experienced experts.