Folder unification, added description and image

UtilsPreview.lua

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+--- Original: Divvy's Preview for Balatro - Utils.lua
+--
+-- Utilities for checking states and formatting display.
+
+function FN.PRE.is_enough_to_win(chips)
+   if G.GAME.blind and
+      (G.STATE == G.STATES.SELECTING_HAND or
+       G.STATE == G.STATES.DRAW_TO_HAND or
+       G.STATE == G.STATES.PLAY_TAROT)
+   then return (G.GAME.chips + chips >= G.GAME.blind.chips)
+   else return false
+   end
+end
+
+function FN.PRE.format_number(num)
+   if not num or type(num) ~= 'number' then return num or '' end
+   -- Start using e-notation earlier to reduce number length, if showing min and max for preview:
+   if true and num >= 1e7 then
+      local x = string.format("%.4g",num)
+      local fac = math.floor(math.log(tonumber(x), 10))
+      return string.format("%.2f",x/(10^fac))..'e'..fac
+   end
+   return number_format(num) -- Default Balatro function.
+end
+
+function FN.PRE.get_dollar_colour(n)
+   if n == 0 then return HEX("7e7667")
+   elseif n > 0 then return G.C.MONEY
+   elseif n < 0 then return G.C.RED
+   end
+end
+
+function FN.PRE.get_sign_str(n)
+   if n >= 0 then return "+"
+   else return "" -- Negative numbers already have a sign
+   end
+end
+
+function FN.PRE.enabled()
+   return G.SETTINGS.FN.preview_score or G.SETTINGS.FN.preview_dollars
+end