Rearrange and rename idea-plugin related and annotation-processing modules

prepare/kotlin-plugin/build.gradle.kts

@@ -1,5 +1,6 @@
 
 import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+import org.gradle.jvm.tasks.Jar
 
 description = "Kotlin IDEA plugin"
 
@@ -13,6 +14,10 @@ buildscript {
     }
 }
 
+plugins {
+    `java-base`
+}
+
 val projectsToShadow = listOf(
         ":plugins:annotation-based-compiler-plugins-ide-support",
         ":compiler:backend",
@@ -57,22 +62,20 @@ dependencies {
     packedJars(preloadedDeps("protobuf-${rootProject.extra["versions.protobuf-java"]}"))
     packedJars(project(":kotlin-stdlib", configuration = "builtins"))
     sideJars(projectDist(":kotlin-script-runtime"))
+    sideJars(projectDist(":kotlin-stdlib"))
+    sideJars(projectDist(":kotlin-reflect"))
     sideJars(commonDep("io.javaslang", "javaslang"))
     sideJars(commonDep("javax.inject"))
     sideJars(preloadedDeps("markdown", "kotlinx-coroutines-core", "kotlinx-coroutines-jdk8"))
 }
 
 val jar = runtimeJar(task<ShadowJar>("shadowJar")) {
-    projectsToShadow.forEach {
-        dependsOn("$it:classes")
-        project(it).let { p ->
-            p.pluginManager.withPlugin("java") {
-                from(p.the<JavaPluginConvention>().sourceSets.getByName("main").output)
-            }
-        }
-    }
     from(files("$rootDir/resources/kotlinManifest.properties"))
-    from(packedJars.files)
+    from(packedJars)
+    for (p in projectsToShadow) {
+        dependsOn("$p:classes")
+        from(project(p).the<JavaPluginConvention>().sourceSets.getByName("main").output)
+    }
 }
 
 ideaPlugin {