Implement unmeta codes

- cited from io.github.izhangzhihao.unmeta

plugin-build/plugin/src/main/java/com/axzae/unmeta/UnmetaPlugin.kt

@@ -8,14 +8,10 @@ const val TASK_NAME = "unmetaTask"
 
 abstract class UnmetaPlugin : Plugin<Project> {
     override fun apply(project: Project) {
-        // Add the 'template' extension object
         val extension = project.extensions.create(EXTENSION_NAME, UnmetaExtension::class.java, project)
 
-        // Add a task that uses configuration from the extension object
         project.tasks.register(TASK_NAME, UnmetaTask::class.java) {
-            it.tag.set(extension.tag)
-            it.message.set(extension.message)
-            it.outputFile.set(extension.outputFile)
+            it.isEnabled = extension.isEnabled.get()
         }
     }
 }