[repo] Migrate javaInstrumentation.gradle.kts into convention plugin

Otherwise, it could not find methods from buildsrc-compat.

repo/gradle-build-conventions/buildsrc-compat/src/main/kotlin/java-instrumentation.gradle.kts

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+allprojects {
+    afterEvaluate {
+        configureJavaInstrumentation()
+    }
+}
+
+// Hide window of instrumentation tasks
+val headlessOldValue: String? = System.setProperty("java.awt.headless", "true")
+logger.info("Setting java.awt.headless=true, old value was $headlessOldValue")
+
+/**
+ *  Configures instrumentation for all JavaCompile tasks in project
+ */
+fun Project.configureJavaInstrumentation() {
+    if (plugins.hasPlugin("org.gradle.java")) {
+        val javaInstrumentator by configurations.creating
+        dependencies {
+            javaInstrumentator("com.jetbrains.intellij.java:java-compiler-ant-tasks:${rootProject.extra["versions.intellijSdk"]}")
+        }
+        for (sourceSet in listOf(mainSourceSet, testSourceSet)) {
+            tasks.named(sourceSet.compileJavaTaskName, InstrumentJava(javaInstrumentator))
+        }
+    }
+}