support web components as frontend framework

[ralyodio]

I don't know if its possible to do ssr with web components, but it would be nice to support native web components.

[ralyodio]

https://lit.dev/docs/ssr/overview/

[terrablue]

Initial support added in https://github.com/primatejs/primate/commit/089c9e35c9b5364e2ff5a4f01a8a06d2d3cd02eb.

To do / missing:

• [ ] Syntax highlighting for .webc in vim / vscode (using the same highlighter as for .html should be enough)
• [ ] unmounted export for cleanup
• [ ] Styling
• [ ] SSR / Hydration
• [ ] Slotting / layouts
• [ ] Head Component
• [ ] Add to support matrix
• [x] Hot reload

[ralyodio]

 window.addEventListener('beforeunload', () => {
   console.log('Clicked browser back button');
 });