Added Option to save Player Visibility Settings in Replay

src/main/java/eu/crushedpixel/replaymod/holders/PlayerVisibility.java

@@ -0,0 +1,17 @@
+package eu.crushedpixel.replaymod.holders;
+
+import java.util.List;
+
+public class PlayerVisibility {
+
+    public PlayerVisibility(List<Integer> hidden) {
+        this.hidden = hidden.toArray(new Integer[hidden.size()]);
+    }
+
+    private Integer[] hidden;
+
+    public Integer[] getHiddenPlayers() {
+        return hidden;
+    }
+
+}