Build a proper stylebook for the design system

[wojtek-krysiak]

Right now in the storybook folder there is a blank story book.

In this task we should populate it with the basic screens from the design system:

• colors,
• shadows,
• typography,
• spacings,
• buttons,
• badges,
• inputs,
• notifications,
• droparea

as it is in the invasion: https://projects.invisionapp.com/d/main?origin=v7#/projects/prototypes/19278503