Hello, could you possibly add this mod if it isn't already added? If it was, I couldn't find it.
Name: Torojima's Buildhelper
Link: https://www.minecraftmods.com/torojimas-buildhelper/
Description: Buildhelper is a fantastic way to edit and manipulate the world around you. You can quickly build walls with the swipe of a wand or fill and empty large bodies of water.