feat: add community contribution ranks

apps/gamification/migrations/0002_scoring_epoch.py

@@ -0,0 +1,13 @@
+from django.db import migrations
+from django.utils import timezone
+
+
+def create_scoring_epoch(apps, schema_editor):
+    ScoringEpoch = apps.get_model("gamification", "ScoringEpoch")
+    ScoringEpoch.objects.get_or_create(pk=1, defaults={"started_at": timezone.now()})
+
+
+class Migration(migrations.Migration):
+    dependencies = [("gamification", "0001_initial")]
+
+    operations = [migrations.RunPython(create_scoring_epoch, migrations.RunPython.noop)]