build: add windows script

installs/windows.ps1

@@ -0,0 +1,50 @@
+$ErrorActionPreference = "Stop"
+
+Write-Host "Preparing installation for kill-tree..."
+
+$binPath = Join-Path -Path $env:USERPROFILE -ChildPath "bin"
+if (-not (Test-Path $binPath)) {
+    New-Item -ItemType Directory -Path $binPath
+    Write-Host "Created bin directory at $binPath"
+}
+
+if (-not ($env:PATH -split ";" -contains $binPath)) {
+    $env:PATH += ";$binPath"
+    [System.Environment]::SetEnvironmentVariable("PATH", $env:PATH, [System.EnvironmentVariableTarget]::User)
+    Write-Host "Added $binPath to user's PATH environment variable"
+}
+
+Write-Host "Downloading and installing kill-tree..."
+
+$tempDir = New-Item -ItemType Directory -Force -Path "$env:TEMP\kill-tree$(Get-Date -Format 'yyyyMMddHHmmss')"
+
+try {
+    $latestReleaseInfo = Invoke-RestMethod -Uri "https://api.github.com/repos/oneofthezombies/kill-tree/releases/latest" -Headers @{"Accept"="application/vnd.github.v3+json"}
+    $asset = $latestReleaseInfo.assets | Where-Object { $_.name -match "kill-tree-windows-x86_64" }
+
+    if (-not $asset) {
+        Write-Error "kill-tree asset not found in the latest release"
+        exit 1
+    }
+
+    $downloadUrl = $asset.browser_download_url
+
+    $localPath = Join-Path -Path $tempDir -ChildPath $asset.name
+    Invoke-WebRequest -Uri $downloadUrl -OutFile $localPath
+
+    $finalPath = Join-Path -Path $binPath -ChildPath "kill-tree.exe"
+    Move-Item -Path $localPath -Destination $finalPath -Force
+
+    Write-Host "kill-tree installed to $finalPath"
+
+    Write-Host "Trying to print version..."
+    & "$finalPath" --version
+
+    Write-Host "kill-tree installed successfully."
+}
+catch {
+    Write-Error "An error occurred: $_"
+}
+finally {
+    Remove-Item -Path $tempDir -Recurse -Force
+}