New match command for react-router CLI

[rossipedia]

We can generate the route tree in both JSX and JSON using react-router routes, but I think it would immensely helpful, especially for larger projects, to be able to effectively call matchRoutes against an arbitrary URL.

For example, given the following route structure:

<Routes>
  <Route file="root.tsx">
    <Route path="login" file="routes/login.tsx" />
    <Route file="routes/layout.tsx">
      <Route index file="routes/index.tsx" />
      <Route path="dashboard" file="routes/dashboard.tsx" />
      <Route path=":username" file="routes/user.tsx">
        <Route path="settings" file="routes/settings.tsx" />
        <Route path="profile" file="routes/profile.tsx" />
        <Route path="about" file="routes/about.tsx" />
      </Route>
    </Route>
  </Route>
</Routes>

One should be able to do something like this:

$ npx react-router match /johndoe/settings
PATH        ROUTE ID          FILE                  PARAMS                
/           root              root.tsx                                    
            routes/layout     routes/layout.tsx                           
:username   routes/user       routes/user.tsx       {"username":"johndoe"}
settings    routes/settings   routes/settings.tsx              

Using --json should get you more structured output:

$ npx react-router match /johndoe/settings --json
[
  {
    "params": {
      "username": "johndoe"
    },
    "pathname": "/",
    "pathnameBase": "/",
    "route": {
      "id": "root",
      "path": "",
      "file": "root.tsx"
    }
  },
  {
    "params": {
      "username": "johndoe"
    },
    "pathname": "/",
    "pathnameBase": "/",
    "route": {
      "id": "routes/layout",
      "file": "routes/layout.tsx"
    }
  },
  {
    "params": {
      "username": "johndoe"
    },
    "pathname": "/johndoe",
    "pathnameBase": "/johndoe",
    "route": {
      "id": "routes/user",
      "path": ":username",
      "file": "routes/user.tsx"
    }
  },
  {
    "params": {
      "username": "johndoe"
    },
    "pathname": "/johndoe/settings",
    "pathnameBase": "/johndoe/settings",
    "route": {
      "id": "routes/settings",
      "path": "settings",
      "file": "routes/settings.tsx"
    }
  }
]

I think this would be super handy, for both diagnostic and tooling use-cases. Thoughts?