Split XYZ data to files containing only heights

[Besjan]

• [x] For each patch load or create related tiles
  • [x] Create float[,] Heights (height / maxHeight): default height is 0
  • [x] Name file as: lon_lat_maxHeight
  • [x] Test binary data (.dat): https://answers.unity.com/questions/1320236/what-is-binaryformatter-and-how-to-use-it-and-how.html