Provide a way to persist prerendered state when using Blazor server-side rendering

[danroth27]

We provide a persist-component-state tag helper for persisting state used during prerendering from an MVC view or Razor Page. We need a way to persist the component state from a Blazor component when using server-side rendering (SSR).

[Alerinos]

@danroth27
This is quite problematic, for example if we want to transport cookies then we have to go through "Component"
Example:

    <component type="typeof(Areas.Web.App)"
               render-mode="ServerPrerendered"
               param-GetIP="@GetIP"
               param-GetAgent="@GetAgent"
               param-GetCookies="@GetCookies"
               param-SessionUser=@SessionStat.User />

If this is not done, we have this effect.
The first reload (server) is correct, the second reload causes the Scope circuit to disappear.
https://gyazo.com/dcae15aebf6269f1023a8f185920a9e1

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edit:
If we do away with _host.cshtml and there is no longer a <component>, how can we pass parameters to the Blazor circuit?