Feat: Example NextJS app with app router #DS-1393

[curdaj]

Description

Additional context

Issue reference

[netlify]

✅ Deploy Preview for spirit-design-system ready!

Name	Link
🔨 Latest commit	0d1b89a
🔍 Latest deploy log	https://app.netlify.com/sites/spirit-design-system/deploys/66c499c05202160008b0014a
😎 Deploy Preview	https://deploy-preview-1578--spirit-design-system.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 96 (no change from production) Accessibility: 93 (no change from production) Best Practices: 100 (no change from production) SEO: 82 (no change from production) PWA: - View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for spirit-design-system-storybook canceled.

Name	Link
🔨 Latest commit	0d1b89a
🔍 Latest deploy log	https://app.netlify.com/sites/spirit-design-system-storybook/deploys/66c499c0bd0f6900087b012d

[github-actions]

coverage: 78.263%. remained the same
when pulling 7abd9d3 on feat/ds-1393-support-ssr-app-router
into 7b3ab46 on main.

[coveralls]

coverage: 78.435%. remained the same
when pulling 0d1b89a on feat/ds-1393-support-ssr-app-router
into 1e0571b on main.

[crishpeen]

LGTM, only thing I am not sure about is that currently when I run make start in the root of the repository, this example starts too, but in the next start state.

I am not sure if we really want to do this. Or if we even want to start it or build it with all other packages and so on.

But we can fix this later too.