Refactor code and remove naga class

src/main/java/net/babamod/mineclass/classes/MineClass.java

@@ -0,0 +1,33 @@
+package net.babamod.mineclass.classes;
+
+import net.babamod.mineclass.utils.Pair;
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.potion.PotionEffectType;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+public interface MineClass {
+
+  Set<Material> getForbiddenItems();
+
+  Map<PotionEffectType, Integer> getPotionEffects();
+
+  Map<Material, List<Pair<Enchantment, Integer>>> getClassEnchantments();
+
+  boolean is(Player player);
+
+  void reapplyEffects(Player player);
+
+  boolean isItemForbidden(Material type);
+
+  boolean isItemEnchantable(Material type);
+
+  void enchantItem(ItemStack itemStack);
+
+  String getCode();
+}