fixed the construction of slopes when starting saves with different settings without restarting the game

fixing the initial creation of the settings file

Added the "DefaultSlopeMultiplier" parameter, which is set to 4 by default, and supports the value 2
The parameter changes the base slope to x2 or x4

1. moved the settings file to ...\VoxelTycoon\Mod_properties\mr14_pack_smooth_rails
2. the "DefaultMultiplier "parameter allows setting "3"
3. bugfix