Add migration to remove Quack from ConfigDB

priv/repo/migrations/20221111164213_deprecate_quack.exs

+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Repo.Migrations.DeprecateQuack do
+  use Ecto.Migration
+  alias Pleroma.ConfigDB
+
+  def up do
+    :quack
+    |> ConfigDB.get_all_by_group()
+    |> Enum.each(&ConfigDB.delete/1)
+
+    logger_config = ConfigDB.get_by_group_and_key(:logger, :backends)
+
+    if not is_nil(logger_config) do
+      %{value: backends} = logger_config
+      new_backends = backends -- [Quack.Logger]
+      {:ok, _} = ConfigDB.update_or_create(%{group: :logger, key: :backends, value: new_backends})
+    end
+  end
+
+  def down, do: :ok
+end