Update Scala CLI example for newer Scala CLI and new snapshots repo

[jackkoenig]

This will be more useful once #4976 is merged but it will make the chisel-example scripts for tagged versions a little bit cleaner too.

Contributor Checklist

• Did you add Scaladoc to every public function/method?
• Did you add at least one test demonstrating the PR?
• Did you delete any extraneous printlns/debugging code?
• Did you specify the type of improvement?
• Did you add appropriate documentation in docs/src?
• Did you request a desired merge strategy?
• Did you add text to be included in the Release Notes for this change?

Type of Improvement

• Internal or build-related (includes code refactoring/cleanup)

Desired Merge Strategy

• Squash

Release Notes

Reviewer Checklist (only modified by reviewer)

• Did you add the appropriate labels? (Select the most appropriate one based on the "Type of Improvement")
• Did you mark the proper milestone (Bug fix: 3.6.x, 5.x, or 6.x depending on impact, API modification or big change: 7.0)?
• Did you review?
• Did you check whether all relevant Contributor checkboxes have been checked?
• Did you do one of the following when ready to merge:
  • Squash: You/ the contributor Enable auto-merge (squash) and clean up the commit message.
  • Merge: Ensure that contributor has cleaned up their commit history, then merge with Create a merge commit.

[seldridge]

See what it looks like to break these out on individual lines. Not blocking, just an idea.

[jackkoenig]

Alright so we're looking at the 3 following options:

1. 1 line

//> using repository https://central.sonatype.com/repository/maven-snapshots
//> using scala 2.13.16
//> using dep org.chipsalliance::chisel:@VERSION@
//> using plugin org.chipsalliance:::chisel-plugin:@VERSION@
//> using options -unchecked -deprecation -language:reflectiveCalls -feature -Xcheckinit -Xfatal-warnings -Ywarn-dead-code -Ywarn-unused -Ymacro-annotations

2. 1 option per line

//> using repository https://central.sonatype.com/repository/maven-snapshots
//> using scala 2.13.16
//> using dep org.chipsalliance::chisel:@VERSION@
//> using plugin org.chipsalliance:::chisel-plugin:@VERSION@
//> using options -unchecked
//> using options -deprecation
//> using options -language:reflectiveCalls
//> using options -feature
//> using options -Xcheckinit
//> using options -Xfatal-warnings
//> using options -Ywarn-dead-code
//> using options -Ywarn-unused
//> using options -Ymacro-annotations

3. Arbitrary-ish split (100 char lines)

//> using repository https://central.sonatype.com/repository/maven-snapshots
//> using scala 2.13.16
//> using dep org.chipsalliance::chisel:@VERSION@
//> using plugin org.chipsalliance:::chisel-plugin:@VERSION@
//> using options -unchecked -deprecation -language:reflectiveCalls -feature -Xcheckinit
//> using options -Xfatal-warnings -Ywarn-dead-code -Ywarn-unused -Ymacro-annotations

I prefer (3), but I don't dispute it is a bit arbitrary. I think (2) looks dumb so would take (1) over that. WDYT?

[jackkoenig]

I'm going to leave as is (3), but we can always revisit.