support phoenix_root_layout without "html"

[mayel]

resolves an issue with the swift rendered inside the html template

[mayel]

even with this fix, I need to add <csrf-token value={Phoenix.Controller.get_csrf_token()} /> to my SWIFTUI code otherwise I'm back to the connection error in #107 because it's not being included in the root layout, seems its this condition not matching in LiveViewNative.Layouts:
is_root_template? = "#{func_name}" == "root_#{platform.platform_id}"

[mayel]

any word on this to avoid the HTML layout being rendered when native one is expected? 🙏

[bcardarella]

@mayel sorry I didn't respond sooner. v0.3.0 is nearing a beta release and we'll have instructions for setting up your app. This PR is resolved with this release as you can now set your own root in your Router:

plug :put_root_layout,
      html: {LvnWorkshopWeb.Layouts, :root},
      swiftui: {LvnWorkshopWeb.Layouts.SwiftUI, :root}

Thanks for the contribution, sorry it didn't make it in!