feat: added a rel prop

[JoPrignol]

Added a rel prop to SocialShare with a default value in order to improve SEO performance

Added a 'rel' prop with a default value of 'nofollow noopener noreferrer'. This will provide a sane behaviour to the link, and add a possibility for the user to customize their link's behaviour.

[gemini-code-assist]

Summary of Changes

Hello @JoPrignol, 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 enhances the SocialShare component by introducing a new rel prop. This addition aims to improve SEO performance and security by applying a default nofollow noopener noreferrer attribute to the social sharing links, while also offering flexibility for users to override this default behavior.

Highlights

• New rel Prop: A new rel prop has been added to the SocialShare component, allowing control over the rel attribute of the generated link.
• Default rel Value: The rel prop defaults to 'nofollow noopener noreferrer', providing improved SEO and security best practices out-of-the-box.
• Customization: The rel prop is fully customizable, enabling users to adjust the link's behavior as needed.

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[gemini-code-assist]

Code Review

This pull request correctly introduces a rel prop to the SocialShare component, improving SEO and security with a sensible default. The implementation is solid. I've added a couple of comments regarding missing documentation and tests for this new feature, which should be addressed to ensure the feature is complete and maintainable.

[Copilot]

Pull request overview

This PR adds a rel prop to the SocialShare component to improve SEO and security by providing control over the link relationship attribute. The default value of 'nofollow noopener noreferrer' follows best practices for external social sharing links.

• Added a customizable rel prop with a secure and SEO-friendly default value
• Maintains backward compatibility while adding flexibility for customization

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