T405635 - Created an API call examples md file
Created a clear, beginner-friendly guide (api-call-examples.md) for integrating with the Wikidata REST API. The guide includes step-by-step instructions and examples for creating author and work items, adding and updating statements, and troubleshooting common errors. Each API operation is documented with its request URL, request type, sample request body, cURL example, and sample response. The guide also provides helpful links to official documentation and community support resources.


