Add Go Report Card badge to README template

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Denis-Averin

codegen/Templates/go/README.mustache

@@ -1,6 +1,7 @@
 # Aspose.BarCode Cloud SDK for Go
 
 [![License](https://img.shields.io/github/license/aspose-barcode-cloud/aspose-barcode-cloud-go)](LICENSE)
+[![Go Report Card](https://goreportcard.com/badge/github.com/aspose-barcode-cloud/aspose-barcode-cloud-go)](https://goreportcard.com/report/github.com/aspose-barcode-cloud/aspose-barcode-cloud-go)
 [![Go](https://github.com/aspose-barcode-cloud/aspose-barcode-cloud-go/actions/workflows/go.yml/badge.svg?branch=main)](https://github.com/aspose-barcode-cloud/aspose-barcode-cloud-go/actions/workflows/go.yml)
 [![GitHub tag (latest SemVer)](https://img.shields.io/github/v/tag/aspose-barcode-cloud/aspose-barcode-cloud-go?label=module&sort=semver)](https://pkg.go.dev/github.com/aspose-barcode-cloud/aspose-barcode-cloud-go)