examples | provide a general example scenario template

[mauroerta]

Provide a general example scenario so that every example under the folder examples looks and behaves the same way no matter the UI framework.

The example must include:

• Usage of all the build-time functionalities (for now we only have createUseSyle but others are going to be introduced)
• Multi pages/routing, depending on the framework could be SSR or client side
• Intense usage of the preset-default, meaning showing off the theme components and how to use them properly
• Deployment to make it accessible even without forking / cloning the repository

Also write a set of E2E tests that can be executed against all the examples in order to be sure that they behave the same way and that they properly work