[Enhancement] Delete media after "x" days (#160)

* [Enhancement] Adds ability to stop media from re-downloading (#159)

* Added column

* Added methods for ignoring media items from future download

* Added new deletion options to controller and UI

* Added controller actions and UI for editing a media item

* Added column to sources

* Added retention period to form

* [WIP] getting retention methods in place

* Hooked up retention worker

* Added column and UI to prevent automatic deletion

* Docs

* Removed unused backfill worker

* Added edit links to media item tabs on source view

* Clarified form wording

* Form wording (again)

priv/repo/migrations/20240402192417_add_prevent_download_to_media_items.exs

@@ -0,0 +1,9 @@
+defmodule Pinchflat.Repo.Migrations.AddPreventDownloadToMediaItems do
+  use Ecto.Migration
+
+  def change do
+    alter table(:media_items) do
+      add :prevent_download, :boolean, default: false, null: false
+    end
+  end
+end

priv/repo/migrations/20240402221638_add_retention_period_to_sources.exs

@@ -0,0 +1,9 @@
+defmodule Pinchflat.Repo.Migrations.AddRetentionPeriodToSources do
+  use Ecto.Migration
+
+  def change do
+    alter table(:sources) do
+      add :retention_period_days, :integer
+    end
+  end
+end

priv/repo/migrations/20240403164943_add_culled_at_to_media_items.exs

@@ -0,0 +1,10 @@
+defmodule Pinchflat.Repo.Migrations.AddCulledAtToMediaItems do
+  use Ecto.Migration
+
+  def change do
+    alter table(:media_items) do
+      add :culled_at, :utc_datetime
+      add :prevent_culling, :boolean, default: false
+    end
+  end
+end