Maps4fs

Objects of Point geometry will now be added to the map too.
More OSM tags supported.

- added advanced settings (maximum height, blur seed)
- added creation of rivers

Basic functionality seems to be working:

- Generating buildings, roads, forests and field
- Generating DEM (heights) map
- Selecting the size of the map (2048, 4096, 8192, or 16384 meters)