chore: move the go code into a subfolder

apps/api/cmd/setup/16.go

@@ -0,0 +1,34 @@
+package setup
+
+import (
+	"context"
+	_ "embed"
+
+	"github.com/zitadel/logging"
+
+	"github.com/zitadel/zitadel/internal/database"
+	"github.com/zitadel/zitadel/internal/eventstore"
+)
+
+var (
+	//go:embed 16.sql
+	uniqueConstraintLower string
+)
+
+type UniqueConstraintToLower struct {
+	dbClient *database.DB
+}
+
+func (mig *UniqueConstraintToLower) Execute(ctx context.Context, _ eventstore.Event) error {
+	res, err := mig.dbClient.ExecContext(ctx, uniqueConstraintLower)
+	if err != nil {
+		return err
+	}
+	count, err := res.RowsAffected()
+	logging.WithFields("count", count).Info("unique constraints updated")
+	return err
+}
+
+func (mig *UniqueConstraintToLower) String() string {
+	return "16_unique_constraint_lower"
+}