Add sand to Piglin Bartering

Sand should be added to one of the things piglins trade for gold. With an effective gold farm and bartering set up this would allow an effective way to gather large amounts of sand for things like clearing out an ocean monument for a guardian farm or crafting large amounts of concrete powder to build said guardian farm out of. Sure some people enjoy the grind of gathering tons upon tons of double chests of sand for those projects but I think an option to have it able to be farmed would be a nice addition