Add component google scholar (#1790)

### What problem does this PR solve?

#1739 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

graph/component/__init__.py

@@ -16,6 +16,7 @@ from .pubmed import PubMed, PubMedParam
 from .arxiv import ArXiv, ArXivParam
 from .google import Google, GoogleParam
 from .bing import Bing, BingParam
+from .googlescholar import GoogleScholar, GoogleScholarParam
 
 
 def component_class(class_name):