Add new implementations for the search results service and the DAO and modify the existing implementations

[rahul6603]

Issue - #1049

Summary

• We will create a new implementation of the SearchResultsService interface in the service layer, called LuceneSearchResultsService and a new implementation of the SearchResultsDAO interface, called LuceneSearchResultsDAO. Currently, these implementations contain placeholders for Apache Lucene search logic which will be added later.
• We will modify the existing service layer implementation SearchResultsServiceImpl to DatabaseSearchResultsService and the existing DAO implementation SearchResultsDAOImp to DatabaseSearchResultsDAO.
• The @Primary annotations on DatabaseSearchResultsService and DatabaseSearchResultsDAO are temporary and will be moved to the new implementations once they are fully functional.
• Reference UML diagram

CC: @mozzy11

[rahul6603]

Hi @mozzy11 , could you please review this PR?
Thank you.

[mozzy11]

@rahul6603 can you add one or two Integration tests for the SearchResultsService for Both DB and Lucene Implemenations and show that currently the DB implementation returns some results and the Lucene Implemenation returns no results