Finish deprecation of VersioningService

We've deprecated org.nuxeo.ecm.core.versioning.VersioningService in favor of org.nuxeo.ecm.core.api.versioning.VersioningService in NXP-25168.

But component declaration hasn't been updated to reflect this change, it still has the deprecated name.

We need to change it to org.nuxeo.ecm.core.api.versioning.VersioningService and add an alias for backward compatibility.
We also need to update all references across the platform.
After that, we need to update documentation to reflect this change.