Add servicemanager for ReaderPluginManager and WriterPluginManager
Update composer.json
Merge branch 'hotfix/4423'

Close #4423
Merge pull request #4424 from TorbenBr/master

Edit config composer.json
[#4424] Updated composer.json

- Use a description for the service-manager suggestion
Merge branch 'hotfix/4424' into develop

Forward port #4424