Implement Lawold capital city: 49 rooms, 59 NPCs, and full world integration

world/lawold/rooms/demons_borough_sawmill.toml

@@ -0,0 +1,11 @@
+name = "The Sawmill"
+description = """\
+A derelict building of brick and slate, filled with complex dwarven \
+machines. It is apparent that the building is a sawmill, but no-one \
+has been able to work out how to operate it in many generations. \
+The bluish slate roof has partially collapsed, revealing the massive \
+wooden beams within. The brown dirt road outside is overgrown with \
+weeds."""
+
+[exits]
+north = "lawold:demons_borough_river_walk"