Update ShopManager.java

[cp12r]

This pull request introduces significant enhancements to the ShopManager class, focusing on improved readability, modularity, and functionality. The following changes have been made:

Changes Made

1. Improved Readability:

   • Enhanced method names and added comments throughout the code for better clarity and understanding.

2. New Methods:

   • initializeCategories(): Initializes and adds shop categories to the GUI, streamlining the category setup process.
   • addCategoryToGui(ShopCategoryItem categoryItem, HashItem separator): A utility method that adds a category item to the GUI along with a separator for better visual organization.
   • openShopForPlayer(Player player): Opens the shop GUI for a specific player, allowing for personalized access to the shop.
   • refreshShopForPlayer(Player player): Refreshes the shop GUI for a specific player, ensuring they see the most up-to-date information.
   • closeShopForPlayer(Player player): Closes the shop GUI for a specific player, providing a clean exit from the shop interface.

3. Modular Design:

   • The code structure has been optimized to allow for easy addition of new categories and items in the future, promoting maintainability and scalability.

cp12