add image hash field

bots/migrations/0007_queueditem_image_hash.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1 on 2022-08-08 01:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bots", "0006_queueditem_message_id"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="queueditem",
+            name="image_hash",
+            field=models.CharField(blank=True, max_length=64, null=True),
+        ),
+    ]