feat(@vtmn/css): add href property on `VtmnListItem`

[Tlahey]

Changes description

Add a link wrapper on the VtmnListItem in order to redirect the user to a page. Add new properties :

• href
• rel
• target (default _blank)

Context

We have to develop a list of suggestion link for the search on dkt website. Today the only way is to use the event and javascript to redirect the user. The solution is add a <a> around the content of the link item to enabled a redirection on a list item.

Checklist

• [ ] Make sure you are requesting to pull a topic/feature/bugfix branch. Please, don't request directly from your main!
• [ ] Check commits & PR names matches our requested structure. It must follow the https://www.conventionalcommits.org pattern.
• [ ] Check your code additions will fail neither code linting checks.
• [ ] I have reviewed the submitted code.
• [ ] I have tested on related showcases.
• [ ] If it includes design changes, please ask for a review with a core team designer.

Does this introduce a breaking change?

No

Other information

[Tlahey]

PR in progress but it works on svelte storybook - part VtmnList. Let's discuss and make the rest if everything is good :)