Add admin interface to manage instances subscriptions

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/service/workers/background_worker.ex

@@ -0,0 +1,17 @@
+defmodule Mobilizon.Service.Workers.BackgroundWorker do
+  @moduledoc """
+  Worker to build search results
+  """
+
+  alias Mobilizon.Actors
+  alias Mobilizon.Actors.Actor
+
+  use Mobilizon.Service.Workers.WorkerHelper, queue: "background"
+
+  @impl Oban.Worker
+  def perform(%{"op" => "delete_actor", "actor_id" => actor_id}, _job) do
+    with %Actor{} = actor <- Actors.get_actor(actor_id) do
+      Actors.perform(:delete_actor, actor)
+    end
+  end
+end