chore: remove app plugin for kotlin 2.1.20-RC

Author: sureshg

sandbox/build.gradle.kts

@@ -2,12 +2,11 @@ import common.*
 import org.gradle.kotlin.dsl.*
 import tasks.*
 
-val enableKmpExec by extra(false)
+val enableKmpExec by extra(true)
 
 plugins {
   id("dev.suresh.plugin.root") version "+"
   id("dev.suresh.plugin.kotlin.mpp") version "+"
-  application
   alias(libs.plugins.shadow)
 }
 
@@ -23,5 +22,3 @@ buildConfig {
 }
 
 kotlin { jvmTarget(project) }
-
-application { mainClass = "MainKt" }

sandbox/src/jvmMain/kotlin/Main.kt renamed to sandbox/src/jvmMain/kotlin/App.kt

@@ -1,3 +1,5 @@
+package dev.suresh
+
 fun main() {
   println("Hello, ${BuildConfig.name}! 🏖")
   println("Java: ${BuildConfig.java}, Kotlin: ${BuildConfig.kotlin}")