Provide Template for Using `Scala 3` with `intellijPlugins += "org.intellij.scala"`

[teeckoo]

There are several comments and discussions suggesting that it is possible to use Scala 3 in an IntelliJ plugin project that depends on:

intellijPlugins += "org.intellij.scala"

It would be very helpful and convenient to have an official template or documented example showing how to set up such a plugin using Scala 3.

This would benefit users who are migrating or starting new IntelliJ plugins with Scala 3 support.

References:

#126 (comment)

#138 (comment)

#111 (comment)

#105 (comment)

Would it be possible to provide such a template or add a documented setup in the README?