This pull request restructures and significantly expands the documentation for the "Recipes" API in Styleframe. The single, large markdown file has been split into a new overview page and navigation metadata, with improved organization, clearer examples, and more comprehensive explanations of recipes, their options, and best practices.

Documentation Restructuring and Improvements:

• The original 10.recipes.md file has been removed and replaced with a more modular structure, including a new overview page (00.index.md) and navigation metadata (.navigation.yml). [1] [2] [3]

New and Expanded Content:

• The new 00.index.md provides a clearer introduction to recipes, step-by-step examples of defining recipes, and detailed explanations of recipe options, variants, default variants, and compound variants.
• The documentation now includes best practices and an expanded FAQ section, comparing Styleframe recipes to similar solutions (CVA, Panda CSS, Stitches) and providing guidance on composition and extension.

Navigation and Metadata Updates:

• Navigation titles and icons for the Recipes section have been moved to .navigation.yml for better organization and consistency with the rest of the documentation.

Code Example Modernization:

• All code samples have been updated for clarity and modern usage, demonstrating the latest recommended patterns for defining tokens, utilities, and recipes in Styleframe.

Deprecated/Preview Notice Removal:

• The warning about recipes being under active development has been removed, indicating that the feature is now officially documented and available.

References: [1] [2] [3]