Should have the ability to statically export server rendered routes as just HTML

[thescientist13]

Type of Change

• New Feature Request
• Documentation / Website
• Improvement / Suggestion
• Bug
• Other (please clarify below)

Summary

As part of supporting SSR, Greenwood should allow users the ability to statically pre-render a page with SSR strategies, even if just to output the contents of the page for static hosting.

notes from Sveltekit team on this from their own implementation analysis

Details

1. Provide an API in getFrontmatter just for SSR routes called staticExport - or just use prerender API convention instead of something new? (or does pre-render imply hydration)
2. Ensure this works for all compatibly renderers and plugin
3. If that is enabled for a route, save the generated HTML to the appropriate file based routing location in the output directory
4. If all routes enable this feature, then running yarn serve should effectively only need to start staticServer