Extend admin, migrations, and tests for authentication and club apps

- Implement admin configurations for User, Member, Family, and FamilyMembership, with specialized inlines and filtered displays.
- Introduce `UserCreationForm` and `UserChangeForm` for streamlined user management.
- Enhance Family model with improved string representation and made name optional.
- Add `Member.contact_email` property for prioritized email retrieval.
- Include tests for the updated Family string logic, contact email functionality, and admin integration.
- Add initial migration for club models (Club, ClubMembership) and updated migration for Family in the authentication app.
- Configure IntelliJ IDEA for local SQLite database access.

club/migrations/0001_initial.py

@@ -0,0 +1,36 @@
+# Generated by Django 6.0.6 on 2026-07-02 14:24
+
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Club',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=255)),
+            ],
+            options={
+                'verbose_name': 'club',
+                'verbose_name_plural': 'clubs',
+                'ordering': ['name'],
+            },
+        ),
+        migrations.CreateModel(
+            name='ClubMembership',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]