Add GitHub workflow and luacheck (#545)

David Leal

2020-06-12 a8daa417c485ee20716ec050d4c676b5c91af773

 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