[K/N][perf] Performance project build

* Add build-tools plugin
* Cleanup code
* Add missing methods after the move

kotlin-native/build-tools/gradle.properties

@@ -1,5 +1,5 @@
 cacheRedirectorEnabled=true
-bootstrap.kotlin.default.version=1.8.20-dev-5197
+bootstrap.kotlin.default.version=1.9.0-dev-877
 kotlin.build.gradlePlugin.version=0.0.39
 
 org.gradle.java.installations.fromEnv=\

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/Utils.kt

@@ -293,26 +293,6 @@ fun Task.dependsOnKonanBuildingTask(artifact: String, target: KonanTarget) {
 }
 
 //endregion
-// Run command line from string.
-fun Array<String>.runCommand(
-    workingDir: File = File("."),
-    timeoutAmount: Long = 60,
-    timeoutUnit: TimeUnit = TimeUnit.SECONDS
-): String {
-    return try {
-        ProcessBuilder(*this)
-            .directory(workingDir)
-            .redirectOutput(ProcessBuilder.Redirect.PIPE)
-            .redirectError(ProcessBuilder.Redirect.PIPE)
-            .start().apply {
-                waitFor(timeoutAmount, timeoutUnit)
-            }.inputStream.bufferedReader().readText()
-    } catch (e: Exception) {
-        println("Couldn't run command ${this.joinToString(" ")}")
-        println(e.stackTrace.joinToString("\n"))
-        error(e.message!!)
-    }
-}
 
 @JvmOverloads
 fun compileSwift(