Provide a bridge between Work and TransientStore

Some services end up using the Work manager as a way to handle storage :

• store some progress information
• store some logging information (ex: CSV Importer NXP-16758)

We recently added a place to handle the result, the TransientStore, for the specific case of Asynchronous Rendition (NXP-16575).

Actually, it could make sense to provide :

• an AbstractWork class that
  • delegate storage to the transient store
  • may clean up the result when the queue entry is cleaned
• an API inside the TransientStore to attach a log to an entry
  • store log as an actual file in append mode ?