added updated code for core wiring

1. Removed tracing
2. Skipped Registration

pkg/plugin/definition/middleware.go

@@ -0,0 +1,10 @@
+package definition
+
+import (
+	"context"
+	"net/http"
+)
+
+type MiddlewareProvider interface {
+	New(ctx context.Context, cfg map[string]string) (func(http.Handler) http.Handler, error)
+}