Add MdgaApp.java and run config

Projekte/mdga/client/build.gradle

@@ -0,0 +1,22 @@
+plugins {
+    id 'buildlogic.jme-application-conventions'
+}
+
+description = 'mdga client'
+
+dependencies {
+    implementation project(":jme-common")
+    implementation project(":mdga:model")
+
+    implementation libs.jme3.desktop
+
+    runtimeOnly libs.jme3.awt.dialogs
+    runtimeOnly libs.jme3.plugins
+    runtimeOnly libs.jme3.jogg
+    runtimeOnly libs.jme3.testdata
+}
+
+application {
+    mainClass = 'pp.mdga.client.MdgaApp'
+    applicationName = 'mdga'
+}