Add Rubber Goo as replacement for the grinder (#578)

TechDudie

2021-02-09 43acec290067f9aca534647d46ba1f13cfeb377a

 technic/tools/vacuum.lua

@@ -44,7 +44,7 @@
            end
         end
      end
		

      technic.set_RE_wear(itemstack, meta.charge, vacuum_max_charge)
      itemstack:set_metadata(minetest.serialize(meta))
      return itemstack