feat: add nbt related methods

common/src/main/java/me/lojosho/hibiscuscommons/items/ItemBuilder.java

@@ -233,6 +233,37 @@ public class ItemBuilder {
         return this;
     }
 
+    /**
+     * Adds NBT data to the item
+     * @param key
+     * @param value
+     * @return
+     */
+    public ItemBuilder addNBTData(NamespacedKey key, String value) {
+        nbtData.put(key, value);
+        return this;
+    }
+
+    /**
+     * Removes the NBT data from the item
+     * @param key
+     * @return
+     */
+    public ItemBuilder removeNBTData(NamespacedKey key) {
+        nbtData.remove(key);
+        return this;
+    }
+
+    /**
+     * This clears the extra NBT data that has been added. This will not clear the default NBT data that is added by the game.
+     * So if you're materially getting an oraxen item, it will not clear the oraxen NBT data.
+     * @return
+     */
+    public ItemBuilder clearNBTData() {
+        nbtData.clear();
+        return this;
+    }
+
     /**
      * Returns the lore of the item. Use #setLore to set the lore!
      * @return
@@ -249,6 +280,10 @@ public class ItemBuilder {
         return List.copyOf(itemFlags);
     }
 
+    public List<NamespacedKey> getNBTDataKeys() {
+        return List.copyOf(nbtData.keySet());
+    }
+
     /**
      * Check to see if a item has any enchantments
      * @return
@@ -273,6 +308,10 @@ public class ItemBuilder {
         return itemFlags.contains(flag);
     }
 
+    public boolean hasNBTData(NamespacedKey key) {
+        return nbtData.containsKey(key);
+    }
+
     public ItemStack build() {
         ItemStack itemStack = Hooks.getItem(material);
         if (itemStack == null) return null;