Sprint 2: Build 'Section Divider' text component

Figma design: https://www.figma.com/design/DpS9o1LIG27rvzTqc13bcQ/Templates-%E2%80%93-wireframes?node-id=1140-10333&t=PGHq4JlcnnZJaq0h-0

Example of it in use. Will span full screen.

Required fields:

• Heading

Optional fields:

• Description
• CTA (internal only for now - may be removed later)

Note: if we move on with sections, this may become a component within Section component.