721 property added for rel to allow

[AndyLongShout]

Description

Updates to the following uui components to add the option for a rel property to allow it to be set by the component rather than just relying on the target="_blank"

uui-button
uui-button-inline - not sure if this is being maintained as the stories and test don't map 100% to the compoment
uui-card
uui-card-block-type
uui-card-content-node
uui-card-media
uui-card-user
uui-menu-item
uui-ref-node
uui-tabs

To ensure it doesn't effect existing links with a target _blank I have left the original logic in to set it to what was previously there but allow it to be overidden by rel prop.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (minor updates related to the tooling or maintenance of the repository, does not impact compiled assets)

Motivation and context

Proposed fix for issue #721
Gived the ability to define the rel on a link
Picked this up as my first contribution to Umbraco

How to test?

Within the following components there is a new prop for rel if you set the rel the value will be set on the anchor tag.

uui-button
uui-button-inline - not sure if this is being maintained as the stories and test don't map 100% to the compoment
uui-card
uui-card-block-type
uui-card-content-node
uui-card-media
uui-card-user
uui-menu-item
uui-ref-node
uui-tabs

Screenshots (if appropriate)

Checklist

• If my change requires a change to the documentation, I have updated the documentation in this pull request.
• [x ] I have read the CONTRIBUTING document.
• [x ] I have added tests to cover my changes.

[github-actions]

Hi there @AndyLongShout, thank you for this contribution! 👍

While we wait for the team to have a look at your work, we wanted to let you know about that we have a checklist for some of the things we will consider during review:

• It's clear what problem this is solving, there's a connected issue or a description of what the changes do and how to test them
• The automated tests all pass (see "Checks" tab on this PR)
• The level of security for this contribution is the same or improved
• The level of performance for this contribution is the same or improved
• Avoids creating breaking changes; note that behavioral changes might also be perceived as breaking
• If this is a new feature, Umbraco HQ provided guidance on the implementation beforehand
• 💡 The contribution looks original and the contributor is presumably allowed to share it

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[sonarcloud]

Quality Gate failed

Failed conditions
9.8% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud