mix: add task for setting an account as locked or not

lib/mix/tasks/set_locked.ex

+defmodule Mix.Tasks.SetLocked do
+  use Mix.Task
+  import Mix.Ecto
+  alias Pleroma.{Repo, User}
+
+  @shortdoc "Set locked status"
+  def run([nickname | rest]) do
+    ensure_started(Repo, [])
+
+    locked =
+      case rest do
+        [locked] -> locked == "true"
+        _ -> true
+      end
+
+    with %User{local: true} = user <- User.get_by_nickname(nickname) do
+      info =
+        user.info
+        |> Map.put("locked", !!locked)
+
+      cng = User.info_changeset(user, %{info: info})
+      user = Repo.update!(cng)
+
+      IO.puts("locked status of #{nickname}: #{user.info["locked"]}")
+    else
+      _ ->
+        IO.puts("No local user #{nickname}")
+    end
+  end
+end