Show number of affected blocks in //set command (#1703)

* Show # of blocks affected in //set

* Fix typo

* fix: Add amount of blocks affected to strings.json

Co-authored-by: NotMyFault <mc.cache@web.de>

worldedit-core/src/main/java/com/sk89q/worldedit/command/RegionCommands.java

@@ -116,7 +116,8 @@ public class RegionCommands {
     ) {
         int affected = editSession.setBlocks(region, pattern);
         if (affected != 0) {
-            actor.print(Caption.of("worldedit.set.done"));
+            actor.print(Caption.of("worldedit.set.done", TextComponent.of(affected)));
+
         }
         return affected;
     }