Build: Centralize build logic for kotlin-plugin in :prepare:idea-plugin

prepare/jps-plugin/build.gradle.kts

@@ -1,9 +1,7 @@
-import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
-
 description = "Kotlin JPS plugin"
 
 plugins {
-    `java-base`
+    java
     id("pill-configurable")
 }
 
@@ -26,14 +24,13 @@ dependencies {
     projectsToShadow.forEach {
         embeddedComponents(project(it)) { isTransitive = false }
     }
+
     embeddedComponents(projectRuntimeJar(":kotlin-daemon-client"))
 }
 
-runtimeJar<ShadowJar>(task<ShadowJar>("jar")) {
-    manifest.attributes.put("Main-Class", "org.jetbrains.kotlin.runner.Main")
-    manifest.attributes.put("Class-Path", "kotlin-stdlib.jar")
+runtimeJar {
+    manifest.attributes["Main-Class"] = "org.jetbrains.kotlin.runner.Main"
+    manifest.attributes["Class-Path"] = "kotlin-stdlib.jar"
     from(files("$rootDir/resources/kotlinManifest.properties"))
     fromEmbeddedComponents()
 }
-
-ideaPlugin("lib/jps")