feat: add ItemTemplate methods

[r-o-b-o-t-o]

• Adds GetItemTemplate(itemEntry)
• Adds Item:GetItemTemplate()
• Adds ItemTemplate methods:
  • ItemTemplate:GetItemId()
  • ItemTemplate:GetClass()
  • ItemTemplate:GetSubClass()
  • ItemTemplate:GetName()
  • ItemTemplate:GetDisplayId()
  • ItemTemplate:GetQuality()
  • ItemTemplate:GetFlags()
  • ItemTemplate:GetExtraFlags()
  • ItemTemplate:GetBuyCount()
  • ItemTemplate:GetBuyPrice()
  • ItemTemplate:GetSellPrice()
  • ItemTemplate:GetInventoryType()
  • ItemTemplate:GetAllowableClass()
  • ItemTemplate:GetAllowableRace()
  • ItemTemplate:GetItemLevel()
  • ItemTemplate:GetRequiredLevel()
    Most of these methods are still accessible through the Item class to keep compatibility with existing scripts.

[55Honey]

Tested with

local function command( event, player, command, chathandler )
   
    if player then
        print('Slot: '..command)
        local template = GetItemTemplate( player:GetItemByPos(255,command):GetEntry() )
        print( 'GetItemId: '.. template:GetItemId() )
        print( 'GetClass: '.. template:GetClass() )
        print( 'GetSubClass: '.. template:GetSubClass() )
        print( 'GetName: '.. template:GetName() )
        print( 'GetDisplayId: '.. template:GetDisplayId() )
        print( 'GetQuality: '.. template:GetQuality() )
        print( 'GetFlags: '.. template:GetFlags() )
        print( 'GetExtraFlags: '.. template:GetExtraFlags() )
        print( 'GetBuyCount: '.. template:GetBuyCount() )
        print( 'GetBuyPrice: '.. template:GetBuyPrice() )
        print( 'GetSellPrice: '.. template:GetSellPrice() )
        print( 'GetInventoryType: '.. template:GetInventoryType() )
        print( 'GetAllowableClass: '.. template:GetAllowableClass() )
        print( 'GetAllowableRace: '.. template:GetAllowableRace() )
        print( 'GetItemLevel: '.. template:GetItemLevel() )
        print( 'GetRequiredLevel: '.. template:GetRequiredLevel() )
    end
end

RegisterPlayerEvent(42, command)