Add using directive for target JVM

[markehammons]

Is your feature request related to a problem? Please describe.
I'd like to post the following code as an example program for my project using scala-cli:

using lib "fr.hammons::slinc-runtime:0.1.1-72-1cedff"
using `jvm` "19"
using `java-opt` "--enable-native-access=ALL-UNNAMED"

import fr.hammons.slinc.runtime.{*,given}

case class div_t(quot: CInt, rem: CInt) derives Struct

object MyLib derives Library:
  def abs(i: CInt): CInt = Library.binding
  def div(numer: CInt, denom: CInt): div_t = Library.binding

@main def program =
  println(MyLib.abs(-5)) // prints 5
  println(MyLib.div(5,2)) // prints div_t(2,1)

The jvm directive would be helpful because the option set here is java 19 specific.

Describe the solution you'd like
Allow the already existing jvm download feature to be applied via a using directive.

[lrytz]

duplicate of #1337

[lwronski]

Thanks for reporting, it should be added in the next version of Scala CLI 0.1.17.