Refactor and enhance device management and authentication features

- Updated the `reverse_dhivehi_string` function to correct the range for combining characters.
- Added new device handling in the health check view and integrated the `add_new_devices_to_omada` task.
- Improved date handling in `CreateTemporaryUserView` to ensure proper string conversion.
- Enhanced OTP sending by converting mobile numbers to strings.
- Implemented MAC address validation in the `Device` model using a custom validator.
- Removed unnecessary fields from the `CreateDeviceSerializer`.
- Normalized MAC address format in the `DeviceListCreateAPIView`.
- Updated the `djangopasswordlessknox` package to improve code consistency and readability.
- Added migration to enforce MAC address validation in the database.

devices/migrations/0006_alter_device_mac.py

@@ -0,0 +1,20 @@
+# Generated by Django 5.2 on 2025-04-25 08:42
+
+import devices.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("devices", "0005_device_has_a_pending_payment"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="device",
+            name="mac",
+            field=models.CharField(
+                max_length=255, validators=[devices.models.validate_mac_address]
+            ),
+        ),
+    ]