Add support for .super suffix in Mill task resolution

[zelosleone]

Add support for .super suffix in Mill task resolution & enhance ParseArgs to handle .super suffix in task selectors:

• Implement processSuperSuffix method to modify segments with .super
• Update extractSegments to post-process selector segments
• Add comprehensive test cases for various .super task resolution scenarios
• Introduce SuperTask in Resolved to handle super task resolution
• Implement SuperTaskHandler to manage super task logic in ResolveCore
• Add methods in Resolve to instantiate and handle super tasks
• Extend existing resolution and instantiation methods to support super tasks
• Add comprehensive test cases for single and multi-level task overrides

fixes #4119

[lihaoyi]

Doesn't seem to work in some cases when I run it manually:

$ ./mill dist.installLocal  

$ ci/patch-mill-bootstrap.sh 

$ ./mill-assembly.jar show contrib.testng.artifactSuffix.super
show java.nio.file.NoSuchFileException: /Users/lihaoyi/Github/mill/out/contrib/testng/artifactSuffix.super.json
    java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
    java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
    java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
    java.base/sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:218)
    java.base/java.nio.file.Files.newByteChannel(Files.java:380)
    java.base/java.nio.file.Files.newByteChannel(Files.java:432)
    java.base/java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:422)
    java.base/java.nio.file.Files.newInputStream(Files.java:160)
    ujson.Readable$$anon$1.transform(Readable.scala:26)
    ujson.Readable$.transform(Readable.scala:15)
    ujson.Readable$.transform(Readable.scala:14)
    upickle.core.BufferedValue$.maybeSortKeysTransform(BufferedValue.scala:76)
    ujson.package$.transform(package.scala:8)
    ujson.package$.read$$anonfun$1(package.scala:15)
    upickle.core.TraceVisitor$.withTrace(TraceVisitor.scala:18)
    ujson.package$.read(package.scala:15)
    mill.main.MainModule$.$anonfun$10(MainModule.scala:343)
    scala.collection.immutable.List.map(List.scala:247)
    scala.collection.immutable.List.map(List.scala:79)
    mill.main.MainModule$.show0$$anonfun$1(MainModule.scala:339)
    mill.api.Result$Success.flatMap(Result.scala:26)
    mill.main.MainModule$.mill$main$MainModule$$$show0(MainModule.scala:333)
    mill.main.MainModule.show$$anonfun$1(MainModule.scala:139)
    mill.define.NamedTask.evaluate(Task.scala:245)
    mill.define.NamedTask.evaluate$(Task.scala:233)
    mill.define.Command.evaluate(Task.scala:387)

[zelosleone]

Jesus, i didnt realize a lot of commits happened, i am going to make a new PR to fix these conflicts sorry about that. @lihaoyi

[jseteny]

$ ./mill-assembly.jar show contrib.testng.artifactSuffix.super

@lihaoyi which def do you expect to get called?
Is it JavaModule: def artifactSuffix: T[String] = platformSuffix()

If yes, how it could be called, since JavaModule is a trait.

[lihaoyi]

Yes, i expect the overriden version from the trait to be called, not the override defined in the package.mill file

[zelosleone]

@lihaoyi should be fine now, sorry for the trouble!

[lihaoyi]

@zelosleone the manual testing steps I provided still fail. Please make sure it works before asking for a review