PR Checklist

This PR enhances the documentation and functionality of createLiveData in the Sanity package.

What is the new behavior?

• Added documentation for single query usage of createLiveData

• Enhanced createLiveData to support both single query and multiple queries configurations

• Added code examples demonstrating both usage patterns:

  // Single query usage
  const livePost = createLiveData(
    () => initialPost,
    () => ({
      query: postQuery,
      params: { slug: 'my-post' },
    }),
  );
  
  // Multiple queries usage (existing functionality)
  const liveData = createLiveData(
    () => initialData,
    () => ({ ... })
  );

• Updated type definitions to support both patterns

• Enhanced parameter documentation to clarify the two supported query configurations

Does this PR introduce a breaking change?

• Yes
• No

Other information

This change improves developer experience by simplifying the API for single query use cases while maintaining backward compatibility for multiple queries.

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