Added BREAK_HOPPERS protection flag

Implements https://github.com/BentoBoxWorld/BentoBox/issues/1331

src/main/java/world/bentobox/bentobox/listeners/flags/protection/BreakBlocksListener.java

@@ -92,6 +92,9 @@ public class BreakBlocksListener extends FlagListener {
         case DRAGON_EGG:
             checkIsland(e, e.getPlayer(), e.getClickedBlock().getLocation(), Flags.DRAGON_EGG);
             break;
+        case HOPPER:
+            checkIsland(e, e.getPlayer(), e.getClickedBlock().getLocation(), Flags.BREAK_HOPPERS);
+            break;
         default:
             break;
         }

src/main/java/world/bentobox/bentobox/lists/Flags.java

@@ -86,6 +86,12 @@ public final class Flags {
      * @since 1.13.0
      */
     public static final Flag BREAK_SPAWNERS = new Flag.Builder("BREAK_SPAWNERS", Material.SPAWNER).mode(Flag.Mode.EXPERT).build();
+    /**
+     * Prevents players from breaking hoppers on one's island.
+     * @see BreakBlocksListener
+     * @since 1.14.0
+     */
+    public static final Flag BREAK_HOPPERS = new Flag.Builder("BREAK_HOPPERS", Material.HOPPER).mode(Flag.Mode.EXPERT).build();
     /**
      * Prevents players from placing blocks on one's island.
      * @see PlaceBlocksListener

src/main/resources/locales/en-US.yml

@@ -717,9 +717,15 @@ protection:
     BREAK_SPAWNERS:
       description: |-
         Toggle spawners breaking.
-        Override the Break Blocks flag.
+        Overrides the Break Blocks flag.
       name: "Break spawners"
       hint: "Spawner breaking disabled"
+    BREAK_HOPPERS:
+      description: |-
+        Toggle hoppers breaking.
+        Overrides the Break Blocks flag.
+      name: "Break hoppers"
+      hint: "Hoppers breaking disabled"
     BREEDING: 
       description: "Toggle breeding"
       name: "Breed animals"