Adds Edit Armor screen to edit a monster's armor stats.

Android/app/src/main/java/com/majinnaibu/monstercards/helpers/ArrayHelper.java

@@ -1,11 +1,9 @@
 package com.majinnaibu.monstercards.helpers;
 
-import androidx.annotation.NonNull;
-
 import java.util.Objects;
 
 public final class ArrayHelper {
-    public static int indexOf(@NonNull Object[] array, Object target) {
+    public static int indexOf(Object[] array, Object target) {
         for (int index = 0; index < array.length; index++) {
             if (Objects.equals(array[index], target)) {
                 return index;