[Example] Migrate example to the new module

example/build.gradle

@@ -1,12 +1,25 @@
 plugins {
     id 'application'
-    id 'checkstyle'
 }
 
 repositories {
     mavenCentral()
 }
 
+application {
+    mainClass = 'Main'
+}
+
 dependencies {
     implementation project(':imgui-app')
 }
+
+task start(type: JavaExec, dependsOn: build) {
+    main = 'Main'
+    classpath = sourceSets.test.runtimeClasspath
+    jvmArgs = ["-Dimgui.library.path=${System.getProperty('libPath', '../bin')}"]
+
+    if (org.gradle.internal.os.OperatingSystem.current().isMacOsX()) {
+        jvmArgs += ['-XstartOnFirstThread', '-Djava.awt.headless=true']
+    }
+}