[Windows] Implement installation helpers refactoring (#8865)

* [Windows] Refactor base Installer helper functions

* Fix helper name

* Fix name gen logic and improve error handling

* Fix hash checking logic

* Fix Install-VsixExtension invocation

* Fix variable name in Install-OpenSSL.ps1

* Fix type for git downloadUrl

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

@@ -7,19 +7,15 @@
 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
+Install-Binary `
+  -Url $downloadUrl `
+  -ExpectedSHA256Sum $externalHash
 
 Add-MachinePathItem "C:\Program Files (x86)\GitHub CLI"