feat: google scholar toolkit support author assignment

[Wendong-Fan]

Description

After discussed with @koch3092 , it's necessary to support author assignment to improve performance, so that if there's author value obtained, it would be used for get_author_publications and get_publication_by_title directly

Motivation and Context

close #1121

• I have raised an issue to propose this change (required for new features and bug fixes)

Types of changes

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds core functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (update in the documentation)
• Example (update in the folder of example)

Implemented Tasks

• Subtask 1
• Subtask 2
• Subtask 3

Checklist

Go over all the following points, and put an x in all the boxes that apply.
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• I have read the CONTRIBUTION guide. (required)
• My change requires a change to the documentation.
• I have updated the tests accordingly. (required for a bug fix or a new feature)
• I have updated the documentation accordingly.

[koch3092]

Thanks @Wendong-Fan LGTM