feat(Edit Mode) #30799 : Creating a REST Endpoint that abstract the Lucene Query generation and return results

[jcastro-dotcms]

Proposed Changes

• Provides a new REST Endpoint that allow users/developers to retrieve content via Lucene from Elasticsearch.
• Uses the recently created LuceneQueryBuilder service to generate the appropriate query, and passes it down to the API to retrieve contents.
• The new Endpoint re-uses the part of the code used by the old /api/content/_search that:
  • Retrieves the results from Elasticsearch.
  • Generates the View object with such results and additional search metadata.
• The re-usable code was moved to the ContentHelper class. All classes in the core project that used such methods were updated, but are NOT part of the goal of this PR.
• Some code issues were found during the creation of the Postman tests. The respective code fixes are included as well.

This PR fixes: #30799

[dotcms-github-app]

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