create scaffolding for wasm distribution

src/wasmJsMain/kotlin/Main.kt

@@ -0,0 +1,53 @@
+package org.example
+
+fun main() {
+    println("OSM Maker - Wasm Version")
+    println("This is a WebAssembly-compiled version of the OSM processing application.")
+
+    // Note: The original application used Java-specific libraries (OSM2World, java.awt.Desktop, java.io.File)
+    // that are not compatible with WebAssembly. This is a simplified version that demonstrates
+    // successful Wasm compilation.
+
+    // In a real Wasm implementation, you would need to:
+    // 1. Use Wasm-compatible libraries for OSM data processing
+    // 2. Use browser APIs for file operations
+    // 3. Use WebGL or similar for 3D rendering instead of generating GLB files
+
+    val bbox = "37.115,-76.396,37.139,-76.345"  // Poquoson, VA bounding box
+    println("Processing OSM data for bounding box: $bbox")
+
+    // Simulate processing
+    processOsmData(bbox)
+
+    println("Wasm compilation successful! Check browser console for output.")
+}
+
+fun processOsmData(bbox: String) {
+    println("Simulating OSM data processing for bbox: $bbox")
+
+    // In a real implementation, this would:
+    // - Fetch OSM data using browser fetch API
+    // - Process the data using Wasm-compatible libraries
+    // - Render 3D output using WebGL
+
+    val coordinates = bbox.split(",")
+    if (coordinates.size == 4) {
+        val south = coordinates[0].toDoubleOrNull()
+        val west = coordinates[1].toDoubleOrNull()
+        val north = coordinates[2].toDoubleOrNull()
+        val east = coordinates[3].toDoubleOrNull()
+
+        if (south != null && west != null && north != null && east != null) {
+            println("Parsed coordinates:")
+            println("  South: $south")
+            println("  West: $west")
+            println("  North: $north")
+            println("  East: $east")
+
+            val area = (north - south) * (east - west)
+            println("  Approximate area: $area square degrees")
+        }
+    }
+
+    println("OSM data processing simulation complete.")
+}