docs: add professional badges to README

- GitHub Release badge (shows current version)
- GitHub Actions CI badge (test status)
- Go Report Card badge (code quality)
- GitHub Stars badge (project popularity)
- GitHub Issues badge (active issues)
- Discussions badge (community engagement)
- Unified flat-square style for consistency
- Added visual separator for better readability

Author: kolkov

README.md

@@ -2,10 +2,17 @@
 
 > **Pure Go implementation for reading AND writing MATLAB `.mat` files** - No CGo required
 
-[![Go Version](https://img.shields.io/badge/Go-1.25%2B-00ADD8?style=flat&logo=go)](https://golang.org)
+[![GitHub Release](https://img.shields.io/github/v/release/scigolib/matlab?include_prereleases&style=flat-square&logo=github&color=blue)](https://github.com/scigolib/matlab/releases/latest)
+[![Go Version](https://img.shields.io/badge/Go-1.25%2B-00ADD8?style=flat-square&logo=go)](https://go.dev/dl/)
 [![Go Reference](https://pkg.go.dev/badge/github.com/scigolib/matlab.svg)](https://pkg.go.dev/github.com/scigolib/matlab)
-[![License](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
-[![Status](https://img.shields.io/badge/status-beta-orange.svg)](https://github.com/scigolib/matlab)
+[![GitHub Actions](https://img.shields.io/github/actions/workflow/status/scigolib/matlab/test.yml?branch=main&style=flat-square&logo=github-actions&label=CI)](https://github.com/scigolib/matlab/actions)
+[![Go Report Card](https://goreportcard.com/badge/github.com/scigolib/matlab?style=flat-square)](https://goreportcard.com/report/github.com/scigolib/matlab)
+[![License](https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)](LICENSE)
+[![GitHub Stars](https://img.shields.io/github/stars/scigolib/matlab?style=flat-square&logo=github)](https://github.com/scigolib/matlab/stargazers)
+[![GitHub Issues](https://img.shields.io/github/issues/scigolib/matlab?style=flat-square&logo=github)](https://github.com/scigolib/matlab/issues)
+[![Discussions](https://img.shields.io/github/discussions/scigolib/matlab?style=flat-square&logo=github&color=purple)](https://github.com/scigolib/matlab/discussions)
+
+---
 
 A modern, pure Go library for **reading and writing** MATLAB `.mat` files without CGo dependencies. Part of the [SciGoLib](https://github.com/scigolib) scientific computing ecosystem.