[Windows] Implement new directories hierarchy (#8616)

images/windows/scripts/build/Install-GitHub-CLI.ps1

@@ -0,0 +1,26 @@
+################################################################################
+##  File:  Install-GitHub-CLI.ps1
+##  Desc:  Install GitHub CLI
+##  Supply chain security: GitHub CLI - checksum validation
+################################################################################
+
+Write-Host "Get the latest gh version..."
+
+$repoUrl = "https://api.github.com/repos/cli/cli/releases/latest"
+$installerFile = "gh_windows_amd64.msi"
+$assets = (Invoke-RestMethod -Uri $repoUrl).assets
+$downloadUrl = ($assets.browser_download_url -match "windows_amd64.msi") | Select-Object -First 1
+$packagePath = Start-DownloadWithRetry -Url $downloadUrl -Name $installerFile
+
+#region Supply chain security - GitHub CLI
+$fileHash = (Get-FileHash -Path $packagePath -Algorithm SHA256).Hash
+$hashUrl = ($assets.browser_download_url -match "checksums.txt") | Select-Object -First 1
+$externalHash = (Invoke-RestMethod -Uri $hashURL).ToString().Split("`n").Where({ $_ -ilike "*windows_amd64.msi*" }).Split(' ')[0]
+Use-ChecksumComparison $fileHash $externalHash
+#endregion
+
+Install-Binary -FilePath $packagePath
+
+Add-MachinePathItem "C:\Program Files (x86)\GitHub CLI"
+
+Invoke-PesterTests -TestFile "CLI.Tools" -TestName "GitHub CLI"