A new ranking highlights opulent gaming destinations from Malaysia to Monaco and Las Vegas.Dice and chips on a casino table in Singapore.Credit: baona/Getty ImagesWhat makes a casino truly luxurious? Is it the elegance of the decor or the exclusivity of the clientele? The quality of the canapés or the opulence of the accommodations?According to a new report from Casinos.com, it’s a little bit of all of these—and theSky Casino Genting in Malaysia…