[SDK] Implement `DistributorClient.batchDistribute` utility

[Utilitycoder]

Add a client-side utility to handle large distributions by splitting them into multiple transactions if necessary, avoiding gas limit issues.

[drips-wave]

Congratulations, @divicbold47! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @divicbold47: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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[Alimzy]

@Alimzy has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I’m interested in this task because it focuses on scalability, transaction efficiency, and reliability in blockchain applications. Implementing a client-side utility to split large distributions into multiple transactions is a practical solution for avoiding gas and transaction size limits while maintaining a smooth user experience.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Alimzy to this issue.