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`).

compiler/daemon/daemon-client/build.gradle.kts

@@ -2,8 +2,10 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 
 description = "Kotlin Daemon Client"
 
-apply { plugin("kotlin") }
-apply { plugin("jps-compatible") }
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
 
 jvmTarget = "1.6"