feat(admin-ui): handle typography - add Heading and Text components

[leopuleo]

Changes

With this PR, we add two new UI components to handle typography: Heading and Text.
The previously used Typography component will render Heading or Text component based on the value inside the use prop.

Heading

Used to render heading elements, such as h1 -> h6.

It accepts the following props:

• level: it controls the heading level from 1 to 6 and how it renders (as defined in Figma);
• as: used to override the renderer tag, so we can make an <h3> to look like a <h1> visually (optional).
• text: used to pass the text to render.

Text

Used to render text elements, such as div or span.

It accepts the following props:

• size: it controls the text size as defined in Figma;
• as: used to specify the tag used by the component: div or span (optional).
• text: used to pass the text to render

[adrians5j]

Looks good... just a couple of short questions. :)