add Quarkus to trial ring

radar/languages-and-frameworks/quarkus.md

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+---
+title: "Quarkus"
+ring: trial
+quadrant: "languages-and-frameworks"
+tags: [java, backend]
+---
+
+[Quarkus](https://quarkus.io/) is a framework for writing Java applications, optimized for use in containers and cloud-native environments like Kubernetes. It combines imperative and reactive development styles into one programming model, offering a developer-centric experience and supporting established standards and frameworks such as RESTEasy, JAX-RS, and Hibernate ORM. With its Microservice First architecture, it ensures fast startup times and efficient development cycles to bring amazing applications to life quickly.
+
+
+## Use cases
+
+- **Container First Approach**: Quarkus is designed with a minimal footprint specifically optimized for running in containers, ensuring efficient resource utilization and scalability in cloud-native environments. It's lightweight nature and fast startup times make it well-suited for serverless computing environments.
+
+- **Imperative and Reactive Programming Model**: Quarkus seamlessly integrates imperative and reactive programming styles, enabling developers to leverage both paradigms within a single framework, thereby enhancing flexibility and productivity in application development.
+
+- **Enterprise Applications**: Quarkus's support for standards and frameworks commonly used in enterprise Java development, such as JAX-RS, Hibernate ORM, and Eclipse MicroProfile, makes it a compelling choice for building a wide range of enterprise applications, including web applications, APIs, and backend services.
+
+### Repositories using Quarkus
+
+- Selfcare Onboarding domain (https://github.com/pagopa/selfcare-onboarding)
+- Selfcare User domain (https://github.com/pagopa/selfcare-user)