docs: add Spanish README

[webbrain-one]

Adds README.es-ES.md alongside the original documentation.

Generated by poolside/laguna-s-2.1:free via OpenRouter.

Summary by Sourcery

Documentation:

• Introduce README.es-ES.md with Spanish documentation for environment variables, deployment options, webhook setup, commands, and support links.

[sourcery-ai]

Reviewer's Guide

Adds a Spanish-language README (README.es-ES.md) that mirrors the existing bot documentation, including environment variables, deployment options, webhook configuration, usage, and support links.

File-Level Changes

Change	Details	Files
Introduce a Spanish translation of the project README documenting bot setup, deployment options, and usage.	Create README.es-ES.md as a localized Spanish documentation entry point for the bot Document required environment variables (API_TOKEN, START_MSG) in Spanish Describe deployment flows for Heroku, Railway, and 000webhost with corresponding buttons and template URLs Explain webhook configuration steps for different hosting providers, including Telegram setWebhook URLs Provide the bot command usage syntax and donation/support links translated and adapted for Spanish readers	README.es-ES.md

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[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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