Create Event Detail Page Template

[zenlex]

[zenlex]

For non-meetup events that are created in pages/events/{slug}/, clicking on their card will load the resulting markdown file into a page of event details. This page needs a basic layout/styling and will depend on the markdown parsing engine we're still implementing.

[zenlex]

This is ready to have design and development started now:

• create figma mockup pulling styling from project/blog detail pages
• create markdown file template with necessary frontmatter
• build components/pages in NextJS (or create new issues for that - see @zenlex)