AC devices page implemented

AC Cubit Add
New Devices Cubit Arch will be used
Devices Cubit (for devices categories, and devices page)
{
AC cubit,
Lights cubit.
... }
Replaced AssetsManager with Assets Class (auto generated)

lib/features/devices/model/device_model.dart

@@ -1,14 +0,0 @@
-class DeviceModel {
-  final String name;
-  final String imageUrl;
-  final String description;
-  final String category;
-  final String id;
-
-  DeviceModel(
-      {required this.name,
-      required this.imageUrl,
-      required this.description,
-      required this.category,
-      required this.id});
-}