T397554: Add Wikidata Query Service link to works list

the main change in file works-list.html and app.py

changes made:-

• Added a Wikidata Query Service (WQS) link to each author's works list.

• Users can view the SPARQL query and reuse it.

• Used urllib.parse is a built-in standard Python library

• Used quote(query) to encode SPARQL queries into URL-safe format

• Added wqs_link variable to generate direct WQS link

• Passed wqs_link to templates for viewing the formatted SPARQL query on Wikidata

• Tested locally — link works and page renders correctly.