Added support for 3rd party dependencies in plugins (#434)

plugins/build.gradle.kts

@@ -1,5 +1,3 @@
-val pluginDir: File by rootProject.extra
-
 plugins {
     kotlin("jvm")
 }
@@ -8,48 +6,24 @@ subprojects {
     apply(plugin = "org.jetbrains.kotlin.jvm")
 
     dependencies {
-        implementation(project(":plugin-api"))
-    }
-
-    tasks.register<Jar>("plugin") {
-        archiveBaseName.set("plugin-${project.name}")
-
-        // first taking the classes generated by the jar task
-        into("classes") {
-            with(tasks.named<Jar>("jar").get())
-        }
-        // and then we also need to include any libraries that are needed by the plugin
-        dependsOn(configurations.runtimeClasspath)
-        into("lib") {
-            from({
-                configurations.runtimeClasspath.get().filter { it.name.endsWith("jar") }
-            })
-        }
-        archiveExtension.set("jar")
-    }
-
-    tasks.register<Copy>("assemblePlugin") {
-        from(project.tasks.named("plugin"))
-        into(pluginDir)
+        compileOnly(project(":plugin-api"))
     }
 
     tasks.jar {
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+        isZip64 = true
+        archiveBaseName.set("plugin-${project.name}")
+
         manifest {
             from("./src/main/resources/MANIFEST.MF")
         }
-    }
 
-    tasks.named("build") {
-        dependsOn(tasks.named("plugin"))
-    }
-}
-
-tasks.register<Copy>("assemblePlugins") {
-    dependsOn(subprojects.map { it.tasks.named("assemblePlugin") })
-}
-
-tasks {
-    "build" {
-        dependsOn(named("assemblePlugins"))
+        from(configurations.runtimeClasspath.get().map { project.zipTree(it) }) {
+            exclude("META-INF/*.SF")
+            exclude("META-INF/*.DSA")
+            exclude("META-INF/*.RSA")
+        }
+        from(sourceSets["main"].output.classesDirs)
+        from(sourceSets["main"].resources)
     }
 }