#3 Add support for pickaxe tweaks integration

if present will register the pickaxe under this mod.

https://content.minetest.net/packages/wsor4035/pick_axe_tweaks/

It's possible that this might conflict with #1 because of the changes to depends.txt but it's a very easy to fix conflict.

Competitor with https://github.com/sirrobzeroone/instant_ores/pull/3