The Torchplacer mod, when toggled on, will automatically place a torch on the ground if you have the torches selected in your hotbar and the light level on the block you are on is below 8. I Googled around for this after Xeriana tp'ed to me because I couldn't understand why mobs were still spawning on my base when it was lit up like a Christmas tree with torches everywhere. She found spots here and there where the light level was 6. This mod would let you run around and the torches would be placed automatically as long as you have them in your inventory. URL to the mod is here: https://mods.curse.com/mc-mods/minecraft/250084-torchplacer if staff would like to check it out. One thing though - it uses the /torch command to toggle the automatic torch placing on and off so this command would need to be white-listed or mod installed on server.