add ability to mount a component from a router

If a component is mounted from a router, then it won't work unless it is actually mounted from that router.

This makes hyper-specs `mount` method not work directly.

Instead you have to create a wrapper component that looks like this:

```ruby
class RouteToProfile < HyperComponent
include Hyperstack::Router
param :id
render do
Switch do
Route('/profile/:id', mounts: UserProfile)
Route('/') { Redirect("/profile/#{id}") }
end
end
end
```

then you can mount `RouteToProfile` and pass the id.

It should be possible to add a `route` option to the mount method, that if present will do the above by using a predefined RouteToComponent method, that takes as parameters the component to mount, the hash of route params, and the route.

For example

```ruby
mount 'Profile', {id: 1}, route: '/profile/:id'
```

would translate to
```ruby
mount 'RouteToComponent', route: '/profile/:id', params: {id: 1}
```
which would dynamically figure everything out.

In the meantime the work around is to follow the pattern above.