add hologram in feature

Author: HSGamer

src/main/java/me/hsgamer/gamesinthebox/game/feature/HologramFeature.java

@@ -98,7 +98,9 @@ public static void reInit(@NotNull Hologram<Location> hologram) {
      */
     @NotNull
     public Hologram<Location> createHologram(@NotNull Location location) {
-        return hologramProvider.createHologram(baseName + "-" + UUID.randomUUID(), location);
+        Hologram<Location> hologram = hologramProvider.createHologram(baseName + "-" + UUID.randomUUID(), location);
+        holograms.add(hologram);
+        return hologram;
     }
 
     @Override