Change: Reorganise industry accept/produce arrays. (#10853)

Use a array of struct for each cargo instead of an array for each statistic.
This makes iterating for acceptance and production much simpler.
pct_transported is now calculated when needed.

src/saveload/saveload.h

@@ -356,6 +356,8 @@ enum SaveLoadVersion : uint16 {
 	SLV_SAVEGAME_ID,                        ///< 313  PR#10719 Add an unique ID to every savegame (used to deduplicate surveys).
 	SLV_STRING_GAMELOG,                     ///< 314  PR#10801 Use std::string in gamelog.
 
+	SLV_INDUSTRY_CARGO_REORGANISE,          ///< 315  PR#10853 Industry accepts/produced data reorganised.
+
 	SL_MAX_VERSION,                         ///< Highest possible saveload version
 };