feat!: complete rearrangement for multi-module platform-specific modules

.scripts/Install.ps1

@@ -0,0 +1,31 @@
+# A build & install script for the project's Windows version.
+$ErrorActionPreference = "Stop"
+$executableName = "door_tray"
+
+if (-Not (Test-Path -Path "./go.mod")) {
+    Write-Error "Please run this script from the project's root directory (go.mod not found)."
+    exit 1
+}
+
+# Build
+go build -o "bin/$executableName-temp.exe" -ldflags "-s -w" "./cmd/windows/"
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "Build failed with exit code $LASTEXITCODE."
+    exit 1
+}
+
+# Compress
+upx "bin/$executableName-temp.exe" -o "bin/$executableName.exe" -5 -f
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "Compression failed with exit code $LASTEXITCODE."
+    exit 1
+}
+Remove-Item "bin/$executableName-temp.exe"
+
+# Setup service
+$serviceName = "DoorTray"
+
+# TODO: Stop old service
+# TODO: Install new binary
+# TODO: Start & verify service
+# TODO: Cleanup, print latest logs