Roadmap updates (#3119)

The roadmap has been moved to a GitHub project, and the Readme now includes a section for linking it.

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Co-authored-by: Oleg Bespalov <oleg.bespalov@grafana.com>

README.md

@@ -85,6 +85,12 @@ The docs cover all aspects of using k6. Some highlights include:
 
 These links barely scratch the surface! If you're looking for conceptual information, you can read about [Test types](https://k6.io/docs/test-types/introduction/), [Test strategies](https://k6.io/docs/testing-guides/), or one of the many informative [Blog posts](https://k6.io/blog).
 
+## Roadmap
+
+Our team is dedicated to continuously improving and providing the best user experience possible. The [public roadmap](https://github.com/orgs/grafana/projects/443/views/1) covers user-oriented features, UX improvements and JavaScript support that our team will focus on. Remember that timeframes and priorities may shift, but we believe it's important to share our vision.
+
+We hope it provides a clear overview of our plans for future development. We welcome feedback, corrections, and suggestions via GitHub to make it more comprehensive, accessible, and valuable for the community.
+
 ## Contribute
 
 If you want to contribute or help with the development of k6, start by reading [CONTRIBUTING.md](CONTRIBUTING.md). Before you start coding, it might be a good idea to first discuss your plans and implementation details with the k6 maintainers—especially when it comes to big changes and features. You can do this in the [GitHub issue](https://github.com/grafana/k6/issues) for the problem you're solving (create one if it doesn't exist).