feat: add task definition

lib/putzplan/tasks.ex

@@ -0,0 +1,7 @@
+defmodule Putzplan.Tasks do
+  use Ash.Domain
+
+  resources do
+    resource Putzplan.Tasks.Definition
+  end
+end

lib/putzplan/tasks/definition.ex

@@ -0,0 +1,31 @@
+defmodule Putzplan.Tasks.Definition do
+  # This turns this module into a resource
+  use Ash.Resource, domain: Putzplan.Tasks
+
+  actions do
+    # Use the default implementation of the :read action
+    defaults [:read]
+
+    # and a create action, which we'll customize later
+    create :create do
+      accept [:description, :repetition_days]
+    end
+  end
+
+  # Attributes are the simple pieces of data that exist on your resource
+  attributes do
+    # Add an autogenerated UUID primary key called `:id`.
+    uuid_primary_key :id
+
+    attribute :description, :string do
+      allow_nil? false
+      public? true
+    end
+
+    attribute :repetition_days, :integer do
+      allow_nil? false
+      public? true
+      constraints min: 1
+    end
+  end
+end