A common zipping and unzipping utility should be implemented

[wikilele]

There is an overlap between the Zip methods exposed by org.eclipse.winery.yaml.common.Utils that allow zipping and unzipping as well as the Zipping and unzipping in org.eclipse.winery.repository.backend.filebased.FilebasedRepository. Quite probably there are, or there will be, other places in the codebase where a unified zip and unzip utility is needed.

The class should probably be in org.eclipse.winery.common.