Add version of Scala to the output of version command

[lwronski]

I added support for printing info about version of Scala CLI and Scala, the following commands return output:

$ scala-cli --version
Scala CLI version 0.1.11
Default Scala version: 3.1.3
$ scala-cli -version
Scala CLI version 0.1.11
Default Scala version: 3.1.3
$ scala-cli version
Scala CLI version 0.1.11
Default Scala version: 3.1.3

I skipped added support for printing version for the following command:

$ scala-cli -v

now -v allows user to increase verbosity, to avoid double meaning of -v, I skip adding support for this case

[Gedochao]

We don't have tests for the version sub-command, do we?
I think adding one for SIP mode and one for vanilla Scala CLI might be worth it.
Otherwise, LGTM

[tanishiking]

Does this PR change the output of scala-cli version too? (edit: never mind, it looks like so 😅 )
If, yes, Metals's ScalaCli support have to update the way to parse the scala-cli's version
https://github.com/scalameta/metals/blob/main/metals/src/main/scala/scala/meta/internal/metals/scalacli/ScalaCli.scala#L192-L205 FYI @tgodzik

[tgodzik]

@tanishiking good catch! We need to adjust to it in Metals before the next release.

[tgodzik]

Does this change makes sense: scalameta/metals#4288 ?

[lwronski]

Does this change makes sense: scalameta/metals#4288 ?

Or you can use --cli-version to print plain Scala CLI version:

scala-cli version --cli-version
0.1.11

[tgodzik]

Was --cli-version available in previous versions also?

[lwronski]

Was --cli-version available in previous versions also?

No, it will be available from 0.1.12

[tgodzik]

So it's probably better to just use version and parse it correctly. Otherwise, it would be harder to support older versions.