feat: add arbitrary test as base

src/test/java/uulm/teamname/marvelous/gamelibrary/TupleTest.java

@@ -0,0 +1,15 @@
+package uulm.teamname.marvelous.gamelibrary;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class TupleTest {
+    @Test
+    void basic() {
+        var a = new Tuple<Integer, Integer>(0, 1);
+        assertEquals((int) a.item1, 0);
+        assertEquals((int) a.item2, 1);
+    }
+}