Add private properties and consist thumbnail

ram/metadata/migrations/0003_property_private.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.0.6 on 2022-07-12 10:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metadata', '0002_alter_decoder_manufacturer'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='property',
+            name='private',
+            field=models.BooleanField(default=False),
+        ),
+    ]

ram/metadata/models.py

@@ -8,6 +8,7 @@ from ram.utils import get_image_preview, slugify
 
 class Property(models.Model):
     name = models.CharField(max_length=128, unique=True)
+    private = models.BooleanField(default=False)
 
     class Meta:
         verbose_name_plural = "Properties"