Add Build.ps1 to replicate Makefile functionality on Windows

Build.ps1

@@ -0,0 +1,32 @@
+# Build.ps1 for WiiPy
+
+# Default option is to run build, like a Makefile
+param(
+    [string]$Task = "build"
+)
+
+$buildWiiPy = {
+    Write-Host "Building WiiPy..."
+    python -m nuitka --show-progress --assume-yes-for-downloads --onefile wiipy.py --onefile-tempdir-spec="{CACHE_DIR}/NinjaCheetah/WiiPy"
+}
+
+$cleanWiiPy = {
+    Write-Host "Cleaning..."
+    Remove-Item -Recurse -Force wiipy.exe, ./wiipy.build/, ./wiipy.dist/, ./wiipy.onefile-build/
+}
+
+switch ($Task.ToLower()) {
+    "build" {
+        & $buildWiiPy
+        break
+    }
+    "clean" {
+        & $cleanWiiPy
+        break
+    }
+    default {
+        Write-Host "Unknown task: $Task" -ForegroundColor Red
+        Write-Host "Available tasks: build, clean"
+        break
+    }
+}