[Do Not Merge] Create an example of using tabs in docusaurus

[petecheslock]

This is a tabs example to the guides directory (docs/guide/tabs-example.md) to help document authors create tabbed content in Docusaurus.

What's Added

A complete reference guide demonstrating how to use tabs in Docusaurus documentation, including:

• Basic tabs - Simple tab structure for different installation methods
• Language-specific code examples - Showing the same API call in Python, JavaScript, cURL, and Go
• Synchronized tabs - Using groupId to keep multiple tab groups in sync
• Best practices - Tips for default tabs, labels, and accessibility

Key Differences from MkDocs

Unlike MkDocs which uses special markdown syntax (=== "Tab Name"), Docusaurus uses React components:

import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';

<Tabs>
  <TabItem value="option1" label="Option 1" default>
    Content here
  </TabItem>
</Tabs>

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