Improve Monster Market to support items

[leordev]

• The current market should support the newly created items, also chests
• The market UI should have filters by type (monster, consumables, potions, enhancements, weapons, armors, boots, chests), date, price
• The market should support partial quantity selling, i.e. if a player is selling 10 potions, the buyer should be able to buy only 3 of them