Add Shadcn

[Dosbodoke]

What is the purpose of this PR?

Add shadcn as the project component library.

What was done to achieve it?

Followed the documentation of installing shadcn in a Vue + Vite application

We will need to use the CLI in order to use this library, this was a thing that I have pointed as as benefic to the Shadcn approach, the ability to just copy and paste the components, but now I found that the vue library only allow to install via CLI

VUE Shadcn	React Shadcn

As you can see, the React library has a guide to install the components manually, and in most cases is the same steps

• Download the Radix primitive component
• Create a file with some code that use this component on the Shadcn way

I don't see this as a problem, but we will need to have a new components.json file at the root of the project that is needed to use the CLI.

About theming, there has a documentation to do it, we can iterate more on this.

How to test if it works?

• Go to any component and put bg-destructive and see if it changes the BG.
• Install any component with the CLI and try to render it. ( installed components will be placed on the /components/ui folder

This change can impact another functionality?

It can change the current style, but I think this is not a concern at the moment.

[WaldemarLehner]

Please merge rewrite into this branch to fix the Pipeline.

[JulianDietzel]

Apart from the question why the "xs" breakpoint was removed, this looks good to me :+1:

We should then address adjusting the theming according to #309 in a follow up PR.