Add downloadCloudflareWARP.ps1 (#38933)
Created for `customer-calabria`. Installs Cloudflare WARP and adds
variables for common organization configuration options.
```
# Define variables
$downloadUrl = "https://downloads.cloudflareclient.com/v1/download/windows/ga"
$tempDir = $env:TEMP
$installerPath = Join-Path $tempDir "Cloudflare_WARP.msi"
$organization = "your-team-name" # Replace with your Cloudflare Zero Trust organization name
$serviceMode = "1dot1" # Gateway with DoH mode (options: warp, 1dot1, proxy, postureonly, tunnelonly)
$autoConnect = 2 # Auto-reconnect after N minutes (0 = indefinite off, 1-1440 = minutes)
$displayName = "display-name" # Organization display name in WARP GUI
$onboarding = $false # Show privacy policy screens on first launch
$switchLocked = $true # Prevent users from manually disabling WARP
```