Debug: Include cost multipliers in rail and road type debug info

src/table/newgrf_debug_data.h

@@ -1252,6 +1252,8 @@ class NIHRailType : public NIHelper {
 			seprintf(buffer, lastof(buffer), "  All compatible: 0x" OTTD_PRINTFHEX64, info->all_compatible_railtypes);
 			output.print(buffer);
 			PrintTypeLabels(buffer, lastof(buffer), info->label, (const uint32*) info->alternate_labels.data(), info->alternate_labels.size(), output.print);
+			seprintf(buffer, lastof(buffer), "  Cost multiplier: %u/8, Maintenance multiplier: %u/8", info->cost_multiplier, info->maintenance_multiplier);
+			output.print(buffer);
 		};
 
 		output.print("Debug Info:");
@@ -1561,6 +1563,8 @@ class NIHRoadType : public NIHelper {
 			seprintf(buffer, lastof(buffer), "    Powered: 0x" OTTD_PRINTFHEX64, rti->powered_roadtypes);
 			output.print(buffer);
 			PrintTypeLabels(buffer, lastof(buffer), rti->label, (const uint32*) rti->alternate_labels.data(), rti->alternate_labels.size(), output.print);
+			seprintf(buffer, lastof(buffer), "    Cost multiplier: %u/8, Maintenance multiplier: %u/8", rti->cost_multiplier, rti->maintenance_multiplier);
+			output.print(buffer);
 		};
 		writeInfo(RTT_ROAD);
 		writeInfo(RTT_TRAM);