✨(tokens) generate css utility classes

These were the missing parts in order to use every design tokens
of Cunningham. Including: spacing, font weight, size, family, and
colors. In order to be really versatile and to allow users to
define new design tokens I had to re-organize the way those tokens
are sub divided in sub objects in cunningham.ts file. That's why
sub division are created for theme.typ.sizes for instance.

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to
 
 ### Added
 
+- Add utility classes
 - Add official design tokens
 - Add component's tokens handling
 - Setup Turborepo and package.json