Add file field for support images as comment

+# Generated by Django 2.2.2 on 2020-02-06 21:31
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_comments', '0003_add_submit_date_index'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='comment',
+            name='image',
+            field=models.FileField(blank=True, null=True, upload_to='comments/%Y/%m/', verbose_name='Image'),
+        ),
+    ]