feat(inferium-gui): centered title

inferium-gui.lua

@@ -2,9 +2,12 @@ local CountersSelector = require('libs/ui/CountersSelector')
 
 local counterMax = 8
 
-local config = {
+local function centerString(str, width)
-  counterMax = counterMax,
+  local padding = (width / 2) - (#str / 2)
-  titleFn = function(countersMap)
+  return string.rep(' ', padding) .. str
+end
+
+local titleFn = function(countersMap)
   local total = 0;
 
   for _, counterPayload in pairs(countersMap) do
@@ -13,8 +16,12 @@ local config = {
     end
   end
 
-    return "| " .. total .. '/' .. counterMax .. ' used farmlands' .. " |"
+  return centerString("" .. total .. '/' .. counterMax .. ' used farmlands' .. "")
 end
+
+local config = {
+  counterMax = counterMax,
+  titleFn = titleFn
 }
 
 local countersMap = {