updated as per the review comments

pkg/plugin/definition/registry.go

@@ -0,0 +1,11 @@
+package definition
+
+import (
+	"context"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+type RegistryLookup interface {
+	Lookup(ctx context.Context, req *model.Subscription) ([]model.Subscription, error)
+}