Advanced section and Parallel tx for Go client

[gbarros]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @gbarros, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces substantial improvements to the Celestia Go client documentation by adding an "Advanced features" section. This new content guides users through submitting multiple blobs atomically and explains the nuances of different transaction submission modes—Default, Queued, and Parallel—to manage throughput and transaction ordering effectively. Furthermore, the existing troubleshooting section has been thoroughly revised and expanded, offering more detailed solutions to common issues, thereby enhancing the overall user experience and clarity of the documentation.

Highlights

• Advanced Features Documentation: A new section has been added to the Go client documentation, detailing advanced usage patterns.
• Multiple Blob Submission: The documentation now explains how to submit multiple blobs within a single transaction, ensuring atomic inclusion at the same block height.
• Transaction Submission Modes: Three distinct transaction submission modes (Default, Queued, Parallel) controlled by TxWorkerAccounts are introduced and elaborated upon, outlining their characteristics, use cases, and throughput implications.
• Enhanced Troubleshooting Guide: The troubleshooting section has been significantly expanded with categorized common errors and their respective solutions for connection, configuration, and blob submission issues.
• Go Version Update: The recommended Go version in documentation examples has been updated from 1.24.6 to 1.25.1.

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[gemini-code-assist]

Code Review

This pull request adds a valuable "Advanced features" section to the Go client tutorial, covering multiple blob submission and different transaction modes, and also enhances the troubleshooting guide. While the new content is very useful, the Go code examples contain several critical issues, such as unhandled errors that can lead to application panics, and incomplete logic which makes the examples not fully functional for a submit-and-retrieve workflow. I have provided detailed review comments with code suggestions to address these problems, ensuring the examples are robust, safe, and complete for developers.

[jcstein]

LGTM