Use Plugins DSL in Kotlin Gradle scripts

When plugins DSL is used, there is no need to
manually generate typesafe accessors for extensions and
conventions (by running `./gradlew kotlinDslAccessorsSnapshot`).

idea/build.gradle.kts

@@ -1,7 +1,9 @@
 import org.gradle.jvm.tasks.Jar
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     testRuntime(intellijDep())

idea/formatter/build.gradle.kts

@@ -1,6 +1,8 @@
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     compile(project(":compiler:util"))

idea/ide-common/build.gradle.kts

@@ -1,6 +1,8 @@
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     compile(project(":compiler:util"))

idea/idea-android/build.gradle.kts

@@ -1,8 +1,10 @@
 
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     testRuntime(intellijDep())

idea/idea-android/idea-android-output-parser/build.gradle.kts

@@ -1,5 +1,7 @@
 
-apply { plugin("kotlin") }
+plugins {
+    kotlin("jvm")
+}
 
 dependencies {
     compile(project(":compiler:util"))

idea/idea-core/build.gradle.kts

@@ -1,6 +1,8 @@
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     compile(projectDist(":kotlin-stdlib"))

idea/idea-gradle/build.gradle.kts

@@ -1,5 +1,7 @@
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     testRuntime(intellijDep())

idea/idea-jps-common/build.gradle.kts

@@ -1,6 +1,8 @@
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     compile(projectDist(":kotlin-stdlib"))

idea/idea-jvm/build.gradle.kts

@@ -1,6 +1,8 @@
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     compile(project(":idea"))

idea/idea-maven/build.gradle.kts

@@ -1,6 +1,8 @@
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     compile(project(":core:util.runtime"))

idea/idea-test-framework/build.gradle.kts

@@ -1,6 +1,8 @@
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 dependencies {
     testCompile(project(":compiler:frontend"))

idea/kotlin-gradle-tooling/build.gradle.kts

@@ -1,8 +1,10 @@
 
 description = "Kotlin Gradle Tooling support"
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 jvmTarget = "1.6"