[Windows] Implement new directories hierarchy (#8616)

images/windows/scripts/build/Install-Git.ps1

@@ -0,0 +1,48 @@
+################################################################################
+##  File:  Install-Git.ps1
+##  Desc:  Install Git for Windows
+##  Supply chain security: Git - checksum validation, Hub CLI - managed by package manager
+################################################################################
+Import-Module "$env:ChocolateyInstall\helpers\chocolateyProfile.psm1"
+
+# Install the latest version of Git for Windows
+$repoURL = "https://api.github.com/repos/git-for-windows/git/releases/latest"
+$gitReleases = Invoke-RestMethod $repoURL
+[string]$downloadUrl = $gitReleases.assets.browser_download_url -match "Git-.+-64-bit.exe"
+$installerFile = Split-Path $downloadUrl -Leaf
+$packagePath = Start-DownloadWithRetry -Url $downloadUrl -Name $installerFile
+
+#region Supply chain security - Git
+$fileHash = (Get-FileHash -Path $packagePath -Algorithm SHA256).Hash
+$externalHash = Get-HashFromGitHubReleaseBody -Url $RepoURL -FileName $installerFile
+Use-ChecksumComparison $fileHash $externalHash
+#endregion
+
+Install-Binary  -FilePath $packagePath `
+                -ArgumentList (
+                    "/VERYSILENT", `
+                    "/NORESTART", `
+                    "/NOCANCEL", `
+                    "/SP-", `
+                    "/CLOSEAPPLICATIONS", `
+                    "/RESTARTAPPLICATIONS", `
+                    "/o:PathOption=CmdTools", `
+                    "/o:BashTerminalOption=ConHost", `
+                    "/o:EnableSymlinks=Enabled", `
+                    "/COMPONENTS=gitlfs")
+
+Update-SessionEnvironment
+
+git config --system --add safe.directory "*"
+
+# Disable GCM machine-wide
+[Environment]::SetEnvironmentVariable("GCM_INTERACTIVE", "Never", [System.EnvironmentVariableTarget]::Machine)
+
+# Add to PATH
+Add-MachinePathItem "C:\Program Files\Git\bin"
+
+# Add well-known SSH host keys to ssh_known_hosts
+ssh-keyscan -t rsa,ecdsa,ed25519 github.com >> "C:\Program Files\Git\etc\ssh\ssh_known_hosts"
+ssh-keyscan -t rsa ssh.dev.azure.com >> "C:\Program Files\Git\etc\ssh\ssh_known_hosts"
+
+Invoke-PesterTests -TestFile "Git"