将ZIO ZStreams列表合并为一个

import zio._
import zio.stream._

object ZStreamMergeExample extends App {
  def processStream(stream: ZStream[Any, Nothing, Int]): ZIO[Any, Nothing, Unit] =
    stream.foreach(i => putStrLn(s"Processed element: $i"))

  def run(args: List[String]): ZIO[ZEnv, Nothing, ExitCode] =
    (for {
      stream1 <- ZStream.range(1, 5)
      stream2 <- ZStream.range(5, 9)
      stream3 <- ZStream.range(9, 13)
      mergedStream = ZStream.mergeAll(List(stream1, stream2, stream3))
      _ <- processStream(mergedStream)
    } yield ()).exitCode
}