update migration code and revert unnecessary commits

Author: madhav2348

java/libraries/serial/.gitignore

@@ -1,2 +1 @@
 bin
-build

java/libraries/serial/build.gradle.kts

@@ -2,33 +2,35 @@ plugins {
     java
 }
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(17))
+sourceSets {
+    main {
+        java {
+            srcDirs("src")
+        }
     }
 }
 
-val coreJar = file("../../../core/library/core.jar")
+repositories {
+    mavenCentral()
+}
 
 dependencies {
-
-    implementation(project(":core"))
+    compileOnly(project(":core"))
+    // TODO: https://github.com/java-native/jssc
     implementation(files("library/jssc.jar"))
 }
 
-tasks.register("checkCore") {
-    doFirst {
-
-        if (!coreJar.exists()) {
-            throw GradleException("Missing core.jar at $coreJar. Please build the core module first.")
-        }
+tasks.register<Copy>("createLibrary") {
+    dependsOn("jar")
+    into(layout.buildDirectory.dir("library"))
+    from(layout.projectDirectory) {
+        include("library.properties")
+        include("examples/**")
     }
-}
-
-tasks.register<Jar>("serialJar") {
-    dependsOn("checkCore", "classes")
-    archiveBaseName.set("serial")
-    destinationDirectory.set(file("library"))
-    from(sourceSets.main.get().output)
-}
-
+    from(configurations.runtimeClasspath) {
+        into("library")
+    }
+    from(tasks.jar) {
+        into("library")
+    }
+}