Add Vetur and Tailwind CSS Intellisense

[jappe999]

Name of an extension you are adding

Vetur and Tailwind CSS IntelliSense. ...

Why do you think this extension is awesome?

Vetur is awesome, because it add syntax highlighting, scaffholding and autocompletion to Vue files. Tailwind CSS IntelliSense adds auto completion. Because of that, I don't have to look up variables in the Tailwind CSS config file. ...

Make sure that:

• [ ] Screenshot/GIF included (to demonstrate the plugin functionality)

• [x] ToC updated

[viatsko]

Hi, thanks for the PR! Would be nice to have screenshots demonstrating the functionality of those extensions