Create a simple and clean /sell command plugin for a Paper 1.21 Minecraft SMP server, similar to the selling feature on Doctor Donut SMP. Core Feature: - Players use /sell while holding an item to instantly sell it for money. - The plugin should support selling the item in hand or a specific amount. Commands: - /sell → sells the item currently held in the player's main hand (all of it) - /sell <amount> → sells only the specified amount of the item in hand (e.g. /sell 64) - /sell all → sells ALL sellable items in the player's inventory at once Features: - Uses Vault for economy (supports any economy plugin like EssentialsX, CMI, etc.) - Configurable selling prices per item in config.yml (item ID or name → price per unit) - Support for selling stacks or partial amounts - Nice chat messages with the amount sold and total money received - Sound effect and particles when selling successfully - Blacklist system: certain items cannot be sold (e.g. spawn eggs, named items, enchanted books with high levels, etc.) - Permission: - easysell.use → allows players to use /sell - easysell.all → allows /sell all - easysell.admin → reload command and edit prices Admin Commands: - /sell reload → reloads config - /sell price <item> <price> → sets the sell price for an item (admin only) Make the plugin lightweight, user-friendly, and beginner-friendly. Include a default config with reasonable sell prices for common resources (dirt, cobble, wood, ores, crops, etc.).