[Enhancement] Custom media lifecycle scripts (#219)

* Namespaced notification modules under lifecycle

* Added a JSON encoder for all the main model types

* Added startup task to create user script file

* Hook up user script event to media download

* Hooked up media deletion user script

* Added jq to docker deps

* Updated README

test/pinchflat_web/controllers/media_profile_controller_test.exs

@@ -1,6 +1,7 @@
 defmodule PinchflatWeb.MediaProfileControllerTest do
   use PinchflatWeb.ConnCase
 
+  import Mox
   import Pinchflat.MediaFixtures
   import Pinchflat.SourcesFixtures
   import Pinchflat.ProfilesFixtures
@@ -15,6 +16,8 @@ defmodule PinchflatWeb.MediaProfileControllerTest do
   }
   @invalid_attrs %{name: nil, output_path_template: nil}
 
+  setup :verify_on_exit!
+
   setup do
     Settings.set(onboarding: false)
 
@@ -136,6 +139,12 @@ defmodule PinchflatWeb.MediaProfileControllerTest do
   describe "delete media_profile when deleting the records and files" do
     setup [:create_media_profile]
 
+    setup do
+      stub(UserScriptRunnerMock, :run, fn _event_type, _data -> :ok end)
+
+      :ok
+    end
+
     test "deletes chosen media_profile and its associations", %{conn: conn, media_profile: media_profile} do
       source = source_fixture(media_profile_id: media_profile.id)
       media_item = media_item_with_attachments(%{source_id: source.id})