feat: CvTag / CvTagSkeleton changes

[caioafc]

Contributes to #1526

What did you do?

CvTag changes

• Added small property to change component size (chosen small instead size because is the only available option for this component)

• Created end tag for skeleton div, <div/> is not the best option

• Reorganized initial tagClasses, we doesn't need to set kind classes when skeleton component is being used

• Set label on Skeleton scenario in the Storybook (fixing console warn above)
  

CvTagSkeleton

• Created CvTagSkeleton for migration purposes by having a separated component to use Skeleton (preserving Vue 2 pattern)

How have you tested it?

• Created unit tests
• Checked Storybook behaviors and it's console

Were docs updated if needed?

• N/A
• No
• Yes

[davidnixon]

👍

[davidnixon]

lgtm. thanks!