* Add --nodemap-type=array option for 2-3x faster osm pass 1 imports
* Add --nodemap-storage=direct option to experiment with direct (off-heap) memory usage
* Extract ResourceUsage and OsmPhaser utilities
* Use large memory-mapped file segments to avoid running out of space on smaller machines
* Add `--nodemap-madvise` argument to opt into madvise(random) for memory-mapped file access