Common code related to Producing status messages

These classes and interface are required for services which would like to publish status events for tracking end 2 end status of data flow.

These changes are related to recent approved ADR osdu/platform/system/home#80

Use cases for Data Sets

File

• User having #number of records to be ingested through CSV File
• Here user would upload the file either by File or Dataset Service and create metadata for holding reference to that file
• Here File or Dataset service should publish the dataset details event after it successfully creates metadata record in storage.

FILE_COLLECTION

• User having number of files to be ingested in Data Platform
• User would upload these files and create its associate metadata record using dataset or file service
• Here File or Dataset service should publish the dataset details event after it successfully creates metadata record in storage.