[Chip] Component specs

[aweell]

@mnnaveenk

I've just created the brach you should work against:
https://github.com/dxc-technology/halstack-style-guide/tree/component-chip/guidelines/components/chip

• Remove different variants in the section appearance (Stick only to the grey background variant)
• Add focus state to the prefix and suffix elements
• Move design tokens table to design specifications section named color subsection
• Update all specs tables following content contribution guidelines
• Update all documentation images according to the image contribution guidelines
• Add bottom links to the component page

[aweell]

Closed via #285