refactor: rename definition to task

lib/putzplan/tasks.ex

@@ -2,6 +2,6 @@ defmodule Putzplan.Tasks do
   use Ash.Domain
 
   resources do
-    resource Putzplan.Tasks.Definition
+    resource Putzplan.Tasks.Task
   end
 end

lib/putzplan/tasks/task.ex

@@ -1,6 +1,8 @@
-defmodule Putzplan.Tasks.Definition do
+defmodule Putzplan.Tasks.Task do
   # This turns this module into a resource
-  use Ash.Resource, domain: Putzplan.Tasks
+  use Ash.Resource,
+    domain: Putzplan.Tasks,
+    data_layer: AshSqlite.DataLayer
 
   actions do
     # Use the default implementation of the :read action