docs: add Spanish README

[webbrain-one]

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

Summary by CodeRabbit

• Documentation
  • Added Spanish-language documentation for Dockyard.
  • Included project details, features, installation options, Docker requirements, quick-start guidance, statistics interval settings, and usage resources.

[coderabbitai]

📝 Walkthrough

Walkthrough

Se añade README.es-ES.md con documentación en español sobre Dockyard, incluyendo sus características, entornos recomendados, métodos de instalación, permisos de Docker, inicio rápido y recursos de uso.

Changes

Documentación en español

Layer / File(s)	Summary
Descripción y características del proyecto README.es-ES.md	Presenta Dockyard como una TUI para gestionar Docker, enumera los entornos recomendados y describe sus capacidades principales.
Instalación y puesta en marcha README.es-ES.md	Documenta los requisitos, tres métodos de instalación, el acceso al socket de Docker, el intervalo de estadísticas y las opciones de ayuda.

Estimated code review effort: 1 (Trivial) | ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: adding a Spanish README translation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@README.es-ES.md`:
- Around line 78-84: Update the “Permisos de Docker” section to warn that
membership in the docker group grants root-level host privileges, and mention
rootless Docker as a safer alternative where appropriate while preserving the
existing setup instructions.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 534926a6-089d-4e49-82ba-3650f7103979

📥 Commits

Reviewing files that changed from the base of the PR and between 64da9f9 and 23d20ce.

📒 Files selected for processing (1)

• README.es-ES.md

[coderabbitai]

🔒 Security & Privacy | 🟠 Major | ⚡ Quick win

Document the security risk of adding users to the docker group.

Membership grants root-level privileges on the host, so this section should warn users and mention rootless Docker as a safer alternative where appropriate. (docs.docker.com)

Proposed clarification

 ## Permisos de Docker
 
+> ⚠️ Advertencia: pertenecer al grupo `docker` concede privilegios equivalentes a root en el host.
+> Considera usar Docker rootless cuando sea apropiado.
+
 Asegúrate de que tu usuario pueda acceder al socket de Docker:

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

	## Permisos de Docker
	Asegúrate de que tu usuario pueda acceder al socket de Docker:
	```bash
	sudo usermod -aG docker $USER
	# Cierra sesión y vuelve a entrar para que los cambios surtan efecto
	```
	## Permisos de Docker
	> ⚠️ Advertencia: pertenecer al grupo `docker` concede privilegios equivalentes a root en el host.
	> Considera usar Docker rootless cuando sea apropiado.
	Asegúrate de que tu usuario pueda acceder al socket de Docker:

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@README.es-ES.md` around lines 78 - 84, Update the “Permisos de Docker”
section to warn that membership in the docker group grants root-level host
privileges, and mention rootless Docker as a safer alternative where appropriate
while preserving the existing setup instructions.