Closes #8248: User bookmarks (#13035)

* Initial work on #8248

* Add tests

* Fix tests

* Add feature query for bookmarks

* Add BookmarksWidget

* Correct generic relation name

* Add docs for bookmarks

* Remove inheritance from ChangeLoggedModel

netbox/extras/migrations/0095_bookmarks.py

@@ -0,0 +1,34 @@
+# Generated by Django 4.1.9 on 2023-06-29 14:07
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('extras', '0094_tag_object_types'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Bookmark',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('object_id', models.PositiveBigIntegerField()),
+                ('object_type', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='contenttypes.contenttype')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'ordering': ('created', 'pk'),
+            },
+        ),
+        migrations.AddConstraint(
+            model_name='bookmark',
+            constraint=models.UniqueConstraint(fields=('object_type', 'object_id', 'user'), name='extras_bookmark_unique_per_object_and_user'),
+        ),
+    ]