create GameCommandRunner to extract business logic

src/test/kotlin/eventDemo/app/command/GameCommandRunnerTest.kt

@@ -0,0 +1,8 @@
+package eventDemo.app.command
+
+import io.kotest.core.spec.style.FunSpec
+
+class GameCommandRunnerTest :
+    FunSpec({
+        test("run should run the correct command") { }
+    })