Resolve: Refactor storage package to use new DB package

Description

• changed Basic Controller and its tests accordingly to DB repositories for StorageVolumes
• minor change on pkg to align with changes on VolController test suite
• improved error handling in one of the clover generic repo methods

Checklist

• I have update updated the @version string in main.go. See https://semver.org/
• I have update CHANGELOG.md with a short description of changes.
• I have run swag init to update the swagger docs.

Closes #489 (closed)