added listener to exit pixelblock when leaving the server

src/main/java/eu/mhsl/minecraft/pixelblocks/pixelblock/PixelBlock.java

@@ -102,6 +102,10 @@ public class PixelBlock {
             .execute();
     }
 
+    public void exitBlock(@NotNull Player player) {
+        player.teleport(this.lastEntryLocation);
+    }
+
     public void setLastEntryLocation(Location lastEntryLocation) {
         this.lastEntryLocation = lastEntryLocation;
     }