Silk Touch Smelting Datapack....

I would like to create a datapack where I can up the amount of the output by the furnace and blast furnace to something other than 1. Both the furnace and blast furnace need to be changed where there is a "count" value like that which is found in the crafting table recipes. If the value is not present, then it would default to one. This way I can specify that when I smelt a diamond ore block it can yield "2" diamonds, less than the average for fortune, but no so much so where you wouldn't want to do it. I could set to one diamond block but that is too OP. Would allow for me to do similar with other ore blocks as well.