IDE perf tests for K/N: keep Kotlin & Gradle versions in *.properties

idea/testData/perfTest/native/_common/build.gradle.kts.header

@@ -0,0 +1,25 @@
+buildscript {
+    repositories {
+        mavenCentral()
+        maven("https://dl.bintray.com/kotlin/kotlin-dev")
+        maven("https://dl.bintray.com/kotlin/kotlin-eap")
+    }
+
+    val kotlin_version: String by rootProject
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+    }
+}
+
+plugins {
+    kotlin("multiplatform")
+}
+
+repositories {
+    mavenCentral()
+    maven("https://dl.bintray.com/kotlin/kotlin-dev")
+    maven("https://dl.bintray.com/kotlin/kotlin-eap")
+}
+
+// "kotlin" section goes under this line
+

idea/testData/perfTest/native/_common/gradle.properties.with-commonizer

@@ -0,0 +1,4 @@
+kotlin.mpp.enableGranularSourceSetsMetadata=true
+kotlin.native.enableDependencyPropagation=false
+
+kotlin_version=1.4.0-dev-3273

idea/testData/perfTest/native/_common/gradle.properties.without-commonizer

@@ -0,0 +1,4 @@
+kotlin.mpp.enableGranularSourceSetsMetadata=true
+kotlin.native.enableDependencyPropagation=true
+
+kotlin_version=1.4.0-dev-3273

idea/testData/perfTest/native/_common/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

idea/testData/perfTest/native/_common/settings.gradle.kts

@@ -0,0 +1,16 @@
+pluginManagement {
+    val kotlin_version: String by settings
+    resolutionStrategy {
+        eachPlugin {
+            if (requested.id.name == "multiplatform") {
+                useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+            }
+        }
+    }
+
+    repositories {
+        gradlePluginPortal()
+        maven("https://dl.bintray.com/kotlin/kotlin-dev")
+        maven("https://dl.bintray.com/kotlin/kotlin-eap")
+    }
+}