Quickstart for Scala 3

[carlosedp]

Based on the Java codestart, I've created a Scala 3 quickstart here:

https://github.com/carlosedp/scala-github-action

Let me know what's needed to make this a codestart if desired!

[gsmet]

Unfortunately, I’m not entirely sure if we can make a Scala 3 codestart.

IIRC, language codestarts need some hooks in core and it’s Scala 2 that is supported there.

That being said, I will have a look at your QuickStart and see if something can be done.

[carlosedp]

Yes, I believe so since I looked into the PR that merged the Kotlin kickstart and I think some stuff like the POM compiler parts are injected by the core...
Thanks! Let me know.