Add GitHub workflow and luacheck (#545)

David Leal

2020-06-12 a8daa417c485ee20716ec050d4c676b5c91af773

 technic_cnc/cnc.lua

@@ -59,7 +59,7 @@
      if minetest.is_protected(pos, player:get_player_name()) then
         return 0
      end
      return stack:get_count()
      return count
   end

   can_dig = function(pos, player)
@@ -72,7 +72,6 @@
   end
end

local shape = {}
local onesize_products = {
   slope                    = 2,
   slope_edge               = 1,