Add tnt mod (freeminer version)

mods/tnt/README.txt

mods/tnt/depends.txt

mods/tnt/init.lua

mods/tnt/sounds/tnt_explode.ogg

mods/tnt/sounds/tnt_gunpowder_burning.ogg

mods/tnt/sounds/tnt_ignite.ogg

mods/tnt/textures/tnt_boom.png

mods/tnt/textures/tnt_bottom.png

mods/tnt/textures/tnt_gunpowder.png

mods/tnt/textures/tnt_gunpowder_burning.png

mods/tnt/textures/tnt_gunpowder_burning_animated.png

mods/tnt/textures/tnt_gunpowder_inventory.png

mods/tnt/textures/tnt_side.png

mods/tnt/textures/tnt_smoke.png

mods/tnt/textures/tnt_top.png

mods/tnt/textures/tnt_top_burning.png

mods/tnt/textures/tnt_top_burning_animated.png