Create LinkButton component

[jakewheeler]

There are links that appear in multiple places throughout the site that contain links styled like buttons. We should create a LinkButton component that:

• Is styled according to the Figma design
• Is usable across all pages that make use of a link stylized as a button
• Can be disabled (which renders styled text, rather than a button or a element)
• Offers a primary and secondary variant (primary being green with white text, secondary being white with dark text)