feat(migration): Add timestamp to UserRegistration

Introduces a timestamp field to record creation time in the
UserRegistration model, improving traceability.

Updates status field with expanded choice set for status handling,
diversifying registration status representations.

src/synapse_registration/registration/migrations/0003_userregistration_timestamp_and_more.py

@@ -0,0 +1,35 @@
+# Generated by Django 5.1.3 on 2024-11-16 20:22
+
+import django.utils.timezone
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("registration", "0002_alter_userregistration_email_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="userregistration",
+            name="timestamp",
+            field=models.DateTimeField(
+                auto_now_add=True, default=django.utils.timezone.now
+            ),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name="userregistration",
+            name="status",
+            field=models.IntegerField(
+                choices=[
+                    (0, "Started"),
+                    (1, "Requested"),
+                    (2, "Approved"),
+                    (3, "Denied"),
+                ],
+                default=0,
+            ),
+        ),
+    ]