Add Global Decorator for stories

[throrin19]

Clear and concise description of the problem

To describe some components, We have to made complexe and redondant templating to include the component inside a story (ex : with vuetify, add the VApp, VContent, VRow, ...)

But for each stories, if we made that, we have to change the source to show only our component and not the complexe decorator template.

Suggested solution

Add the possibility to configure a global decorator for :

• All histoire config (in the histoire.setup.js ?
• specific story

Alternative

No response

Additional context

No response

Validations

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• [X] Read the Contributing Guidelines.
• [X] Read the docs.
• [X] Check that there isn't already an issue that requests the same feature to avoid creating a duplicate.