[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-Miniconda.ps1

@@ -5,28 +5,28 @@
 ################################################################################
 
 $CondaDestination = "C:\Miniconda"
-
-# Install the latest Miniconda
 $InstallerName = "Miniconda3-latest-Windows-x86_64.exe"
-$InstallerUrl = "https://repo.anaconda.com/miniconda/${InstallerName}"
-$ArgumentList = ("/S", "/AddToPath=0", "/RegisterPython=0", "/D=$CondaDestination")
-
-Install-Binary -Url $InstallerUrl -Name $InstallerName -ArgumentList $ArgumentList
-[System.Environment]::SetEnvironmentVariable("CONDA", $CondaDestination, "Machine")
 
 #region Supply chain security
-$localFileHash = (Get-FileHash -Path (Join-Path ${env:TEMP} $installerName) -Algorithm SHA256).Hash
 $distributorFileHash = $null
-
 $checksums = (Invoke-RestMethod -Uri 'https://repo.anaconda.com/miniconda/' | ConvertFrom-HTML).SelectNodes('//html/body/table/tr')
 
-ForEach($node in $checksums) {
+foreach ($node in $checksums) {
     if ($node.ChildNodes[1].InnerText -eq $InstallerName) {
         $distributorFileHash = $node.ChildNodes[7].InnerText
     }
 }
 
-Use-ChecksumComparison -LocalFileHash $localFileHash -DistributorFileHash $distributorFileHash
+if ($null -eq $distributorFileHash) {
+    throw "Unable to find checksum for $InstallerName in https://repo.anaconda.com/miniconda/"
+}
 #endregion
 
+Install-Binary `
+    -Url "https://repo.anaconda.com/miniconda/${InstallerName}" `
+    -InstallArgs @("/S", "/AddToPath=0", "/RegisterPython=0", "/D=$CondaDestination") `
+    -ExpectedSHA256Sum $distributorFileHash
+
+[System.Environment]::SetEnvironmentVariable("CONDA", $CondaDestination, "Machine")
+
 Invoke-PesterTests -TestFile "Miniconda"