refactor and improve performance of table functions

[BigSmoKe07]

Function Refactor:

• contains
• table_matches
• table_merge

[rhykosqc]

With this update, we have encountered an inventory problem. We are no longer able to reload weapons.

--> I think its come from table.contains

function Inventory.GetSlotWithItem(itemName, metadata, strict)
    local inventory = PlayerData.inventory
    local item = Items(itemName) --[[@as OxClientItem?]]
    
    if not inventory or not item then return end
    
    metadata = assertMetadata(metadata)
    local tablematch = strict and table.matches or table.contains
    
    for _, slotData in pairs(inventory) do
        if slotData and slotData.name == item.name and (not metadata or tablematch(slotData.metadata, metadata)) then
	   return slotData
        end
    end
end