Add migration

backend/grants/migrations/0018_grant_plain_thread_id.py

@@ -0,0 +1,19 @@
+# Generated by Django 4.2.7 on 2024-01-30 12:39
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("grants", "0017_alter_grant_github_handle"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="grant",
+            name="plain_thread_id",
+            field=models.CharField(
+                blank=True, max_length=50, null=True, verbose_name="Plain threadID"
+            ),
+        ),
+    ]