new feature branch kotlin script

NewFeature.kts

fun exec(str: String) = ProcessBuilder(str.split(" "))
        .redirectInput(ProcessBuilder.Redirect.PIPE)
        .redirectOutput(ProcessBuilder.Redirect.PIPE)
        .redirectError(ProcessBuilder.Redirect.PIPE)
        .start()
        .inputStream
        .reader()
        .readLines()
        .forEach(::println)

exec("git checkout upstream/develop")
exec("git checkout -b feature/${args[0]}")
exec("git pull upstream develop")