Shell plugin readme

[babourine]

No description provided.

[Copilot]

Pull Request Overview

This pull request introduces documentation for the Shell Plugin and updates the main README to reference the plugin’s source code directly.

• Added a complete README for the Shell Plugin detailing configuration, security considerations, and usage examples.
• Updated the main README to include a link to the Shell Plugin source file.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
plugins/shell/README.md	New documentation for the Shell Plugin with usage, configuration, and security guidelines.
README.md	Updated plugin table to include a direct link to the Shell Plugin source code.

Comments suppressed due to low confidence (1)

plugins/shell/README.md:5

• [nitpick] Consider expanding the security note to include a brief recommendation on input sanitization or referencing a security best practices guide to help users mitigate risks.

⚠️ **Security Note:** Use with caution. Improperly configured shell commands can introduce security vulnerabilities. Always validate inputs and restrict command access where possible.

[Copilot]

[nitpick] Providing an absolute URL is helpful; consider using a relative link instead to ensure the reference remains valid in offline or different deployment scenarios.