feat(es_extended): add Config.EnablePickup to disable/enable this feature

[mysbryce]

Description

This PR introduces a new configuration option, Config.EnablePickup, to es_extended. This toggle gives server owners the flexibility to choose whether a physical pickup object drops on the ground when an item or weapon is removed from a player's inventory.

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Motivation

Currently, removing an item or a weapon automatically forces a ground pickup to spawn. While this fits some server styles, many developers prefer to delete items silently (e.g., for clean-up scripts, custom inventory wipes, or specific roleplay scenarios) without cluttering the map or allowing players to immediately scoop the item back up. This change solves that issue by putting the control directly in the config.

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Implementation Details

• Added Config.EnablePickup to config.lua (defaulting to true to preserve original framework behavior).
• Wrapped the pickup spawning logic inside the item/weapon removal functions with a simple conditional check. If set to false, the item is removed cleanly without executing the object creation code.

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Usage Example

In your config.lua:

-- Set to true to drop a pickup on the ground when items/weapons are removed (Default)
-- Set to false to silently delete them without spawning a ground pickup
Config.EnablePickup = false 

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PR Checklist

• My commit messages and PR title follow the [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/) standard.
• My changes have been tested locally and function as expected.
• My PR does not introduce any breaking changes.
• I have provided a clear explanation of what my PR does, including the reasoning behind the changes and any relevant context.