Adds README for inspector-controls-tabs component

[dhruvikpatel18]

Closes: #64791

What?

This PR adds comprehensive README documentation for the inspector-controls-tabs component, which previously lacked usage instructions and documentation.

Why?

The inspector-controls-tabs component is currently missing documentation, making it challenging for developers to understand and implement effectively. This documentation will:

• Help developers quickly understand the component's purpose and capabilities
• Provide clear usage examples and best practices
• Improve the overall developer experience when working with the Gutenberg editor

How?

Added a new README.md file for the inspector-controls-tabs component that includes:

• Clear component description
• Installation instructions
• Basic and advanced usage examples with code snippets
• Complete props documentation
• Implementation best practices
• Related components reference

Testing Instructions

1. Navigate to the packages/block-editor/src/components/inspector-controls-tabs directory
2. Verify that the new README.md file exists
3. Check that the documentation is complete and follows WordPress documentation standards
4. Verify that the code examples are correct and properly formatted
5. Test one of the example implementations in a local environment to ensure accuracy

[github-actions]

Warning: Type of PR label mismatch

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• Type-related labels to choose from: [Type] Automated Testing, [Type] Breaking Change, [Type] Bug, [Type] Build Tooling, [Type] Code Quality, [Type] Copy, [Type] Developer Documentation, [Type] Enhancement, [Type] Experimental, [Type] Feature, [Type] New API, [Type] Task, [Type] Technical Prototype, [Type] Performance, [Type] Project Management, [Type] Regression, [Type] Security, [Type] WP Core Ticket, Backport from WordPress Core, Gutenberg Plugin.
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[github-actions]

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Unlinked Accounts

The following contributors have not linked their GitHub and WordPress.org accounts: @aminul-xs.

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Co-authored-by: dhruvikpatel18 <[email protected]>

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