This pull request enhances the documentation and configuration for the CCIP v1.6.0 API on SVM-based blockchains, focusing on improving navigation, adding new sections, and providing more detailed descriptions for various components. Key changes include updates to the sidebar configuration, expanded API documentation, and the addition of new error codes and token pool components.

Navigation and Configuration Updates:

• Added a new "Architecture" section under the "SVM" category in the sidebar and replaced it with an "Integration Guide" in another location. This improves the organization and accessibility of the documentation. (src/config/sidebar.ts, [1] [2]
• Introduced new entries for "Base Token Pool Library," "BurnMint Token Pool," and "Lock-Release Token Pool" in the API reference sidebar configuration. (src/config/sidebar/ccip/api-reference/svm/v1_6_0.json, src/config/sidebar/ccip/api-reference/svm/v1_6_0.jsonR14-R25)

Documentation Enhancements:

• Expanded metadata descriptions and added excerpts for API reference pages, providing more comprehensive and searchable summaries for components like the Router, Receiver, Messages, and Errors. (errors.mdx, [1]; index.mdx, [2]; messages.mdx, [3]; receiver.mdx, [4]; router.mdx, [5]
• Improved the structure of the "Router" documentation by categorizing instructions (e.g., ccip_send) under "Message Sending" and adding details about router management. (router.mdx, src/content/ccip/api-reference/svm/v1.6.0/router.mdxL6-R19)

Error Handling and Token Pool Documentation:

• Added detailed tables for new error codes, categorized into sections such as "Common Errors," "Token Administration Errors," and "Account Derivation Errors." These provide better guidance for debugging and error resolution. (errors.mdx, src/content/ccip/api-reference/svm/v1.6.0/errors.mdxL16-R121)
• Introduced documentation for "BurnMint Token Pool" and "Lock-Release Token Pool," including their respective error codes and implementation details. (errors.mdx, [1]; index.mdx, [2]

These updates significantly improve the clarity, depth, and usability of the CCIP v1.6.0 API documentation for developers working with SVM-based blockchains.