Additional Semantic Scholar API

[movinam]

Summary:

This PR adds an additional endpoint to the SemanticScholarSearchTool. It also adds support for additional Semantic Scholar APIs in the future.

Details:

1. Add a field named endpoint to allow arun to direct Semantic Scholar tool calls to:
   a. search by default (previous functionality)
   b. get paper details using DOI via the /graph/v1/paper/DOI endpoint

2. Add PaperDataItem to structures.py. It represents a schema replicating the response from semantic scholar for a single paper (ref).

3. Add SearchItem as an abstraction to support different types of search results instead of restricting results to SearchResultItem. This way we can inherit from SearchItem and create result schemas based on the search. This change has been made only for SemanticScholarSearchTool as it has different endpoints that produce different results. SearchResultItem and PaperDataItem will inherit from SearchItem.

Usage:

Will allow users to fetch paper details for a given DOI or list of DOIs by calling Semantic Scholar's DOI endpoint.

Checks

• Tested Changes
• Stakeholder Approval

[movinam]

@NISH1001 Please test and make the necessary changes required to make the PR adhere the current abstraction.

[NISH1001]

ONce these changes are addressed, i can have a final look and merge. Thanks for the PR.

[NISH1001]

@movinam also please add test cases in tests/ as well.

And in this PR, add the usage section as well. This will give idea what the new feature is doing.

Example PR:
#77