implement step 2 stuff

priv/repo/migrations/20211204212315_add_service_and_recipient_to_links.exs

@@ -0,0 +1,10 @@
+defmodule Entendu.Repo.Migrations.AddServiceAndRecipientToLinks do
+  use Ecto.Migration
+
+  def change do
+    alter table(:links) do
+      add :recipient, :string
+      add :service, :string
+    end
+  end
+end