Scala 3 Quarkus improvements to close the gap to Kotlin

[carlosedp]

With this issue, I'd like to list some gaps and improvements that could be done to the Quarkus / Scala ecosystem to bring it up to a similar level as Kotlin.

Some features are shown in my Scala 3 Quarkus quickstart project at: https://github.com/carlosedp/scala3-quarkus-quickstart/

Some Improvements:

• [ ] Create a Scala guide page in https://quarkus.io that could use as a base the readme of this extension
• [ ] Register the Scala Enum module in ObjectMapper when Jackson Scala module is added along the lines I did in https://github.com/carlosedp/scala3-quarkus-quickstart/blob/main/src/main/scala/helper/EnumJsonSerializationHelper.scala. I see the DefaultScalaModule is already added. Is it possible to also add the lib to avoid the user to add it?
  • Addressed by #36
• [ ] Is it possible to add scala3-compiler_3 to the extension so it's one less lib to add to Maven/Gradle user project?
• [ ] Add the RestAssured DSL to the module for ease-of-use?
  • Opened https://github.com/rest-assured/rest-assured/pull/1770/ to add the DSL to rest-assured
• [ ] Allow use of Scala Futures and Promises in Quarkus Resources - Addressed by #51
• [ ] Allow use of Scala Zio effects in Quarkus Resources - Addressed by #52

Current extensions published for Kotlin:

• [x] Kotlin (which I understand provides the same functionality as this extension)
• [ ] Hibernate ORM with Panache and Kotlin
• [ ] Hibernate Reactive Panache Kotlin
• [ ] MongoDB with Panache for Kotlin
• [ ] REST Client Reactive Kotlin Serialization
• [ ] RESTEasy Reactive Kotlin Serialization
• [ ] RESTEasy Reactive Kotlin
• [ ] RESTEasy Reactive Kotlin Serialization Common
• [ ] Scheduler
• [ ] Smallrye Reactive Messaging

I understand these provide some abstractions to the underlying Java libraries to a more Kotlin-esque style. Could be done on a needed-basis.