Fish Rework - Fishing

✨ New Features

• Custom Fish Shops — Players can now create and manage their own fish shops. Use the new shop GUI to list items for sale, set prices, and remove listings.
• New Shop Recipes — New craftable items let you craft your own fish stall directly in-game.
• New /fishing Shop Commands — New subcommands were added to manage your fish shop directly from chat.
• Upgrade Table & Book Merger — New custom block entities to consolidate the Upgrade menu, craftable and unlockable by fishing levels.

🔧 Changes & Improvements

• Upgrade Table Tweaks — Balance adjustments made to the upgrade table.
• New Fish Stall Variant — A lighter fish stall variant was added as an alternative and default option.
• GUI Size Adjustments — Several menus were resized for a cleaner look.

🐛 Bug Fixes

• Fish Stall Placement Fix — Fixed edge cases when placing fish stalls.
• General Bug Fixes — Multiple rounds of miscellaneous fixes following the fish shop update.