Add admin interface to manage instances subscriptions

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

lib/mobilizon/actors/follower.ex

@@ -19,11 +19,15 @@ defmodule Mobilizon.Actors.Follower do
   @required_attrs [:url, :approved, :target_actor_id, :actor_id]
   @attrs @required_attrs
 
+  @timestamps_opts [type: :utc_datetime]
+
   @primary_key {:id, :binary_id, autogenerate: true}
   schema "followers" do
     field(:approved, :boolean, default: false)
     field(:url, :string)
 
+    timestamps()
+
     belongs_to(:target_actor, Actor)
     belongs_to(:actor, Actor)
   end