Fixing branch setup to match main

Projekte/battleship/server/build.gradle

@@ -0,0 +1,14 @@
+plugins {
+    id 'buildlogic.java-application-conventions'
+}
+
+description = 'Battleship Server'
+
+dependencies {
+    implementation project(":battleship:model")
+}
+
+application {
+    mainClass = 'pp.battleship.server.BattleshipServer'
+    applicationName = 'battleship-server'
+}