Create AdminAPI.UserView to avoid compile-time dep

Speeds up recompilation

lib/pleroma/web/admin_api/controllers/user_controller.ex

@@ -45,8 +45,6 @@ defmodule Pleroma.Web.AdminAPI.UserController do
     when action in [:follow, :unfollow]
   )
 
-  plug(:put_view, Pleroma.Web.AdminAPI.AccountView)
-
   action_fallback(AdminAPI.FallbackController)
 
   defdelegate open_api_operation(action), to: Pleroma.Web.ApiSpec.Admin.UserOperation

lib/pleroma/web/admin_api/views/user_view.ex

@@ -0,0 +1,10 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.AdminAPI.UserView do
+  use Pleroma.Web, :view
+  alias Pleroma.Web.AdminAPI
+
+  def render(view, opts), do: AdminAPI.AccountView.render(view, opts)
+end