Add named routes

[pingusama1]

Allow to name a route.

This makes applications easier to maintain.

A simplified example:

Router:
const router = createBrowserRouter([ { path:"/", element: , children: [{path:"/article",name:"listArticles",element:}, { path:"/article/:id", name:"showArticle", element:
}] } ])

ArticleList:
import { Link,useNamedRoutes } from "react-router-dom"
const articles: { id: number, title: string }[] // List of articles

const {route} = useNamedRoutes()

return (
<>
articles.map(({id,title})=><Link to={route("showArticle",{ id:id.toString() })>{title}
</>
)

I have create a pull request for that: #11945