Terrain To Stl

Create a command-line tool, similar to `terrain-to-stl`, that can generate 3D printable STL files from geographic data. The tool should be able to download elevation data (like USGS 3DEP) and building footprints. Key features include processing the terrain by applying vertical exaggeration, generating stepped-extrusion buildings, and handling water bodies by cutting them through the mesh. It needs to support specifying the area via a bounding box (`--bbox`) or a landmark name (`--landmark`), and it should allow the user to define the map scale and vertical exaggeration. Finally, it must split the final model into multiple, tile-sized STL pieces suitable for FDM printing.