Add: RedHat-Middleware-Workshops/spring-to-quarkus-todo (Spring Boot -> Quarkus)

[jwmatthews]

https://github.com/RedHat-Middleware-Workshops/spring-to-quarkus-todo

This tutorial takes a Spring Boot application using Spring MVC, Spring Data JPA, and a PostgreSQL database and converts it to Quarkus with little-to-no source code changes. It uses the [Red Hat Migration Toolkit for Applications](https://developers.redhat.com/products/mta/overview) to analyze the Spring Boot application and offer suggestions for how to migrate it to Quarkus

[jwmatthews]

This has been used in past by WindUp team with migration target 'quarkus' for testing rules