Create routes for the legal pages

### Context
Resources: [Migrating Pages](https://nextjs.org/docs/app/building-your-application/upgrading/app-router-migration#step-4-migrating-pages), [Route Group](https://nextjs.org/docs/app/building-your-application/routing/colocation#route-groups)

We want to add the following static legal pages to the `app` router:
- License
- Privacy
- Terms

### Problem or idea
As stated above, add new routes for the legal pages to the `app` router.

### Solution or next step
- Create the routes for the regal pages: `license`, `privacy`, `terms` in `app`
- Convert `components/shared/PageStatic` ( a shared template for the above pages) to a route group layout (e.g., `StaticPageLayout`)