Install Stack, GHC and Cabal to Windows Images (#874)

* install stack
* implement logic that gets 3 latest versions of ghc

images/win/scripts/Installers/Validate-Haskell.ps1

@@ -0,0 +1,78 @@
+################################################################################
+##  File:  Validate-Haskell.ps1
+##  Desc:  Validate Haskell for Windows
+################################################################################
+
+# GHC validation
+if (Get-Command -Name 'ghc')
+{
+    Write-Host "ghc is on the path"
+}
+else
+{
+    Write-Host "ghc is not on path."
+    exit 1
+}
+
+$SoftwareName = "ghc"
+[String] $DefaultGhcVersion = & ghc --version
+$ChocoPackagesPath = Join-Path $env:ChocolateyInstall "lib"
+[Array] $GhcVersionList = Get-ChildItem -Path $ChocoPackagesPath -Filter "ghc.*" | ForEach-Object { $_.Name.TrimStart("ghc.") }
+
+# Validation that accurate 3 versions of GHC are installed
+if ($GhcVersionList.Count -eq 3)
+{
+    Write-Host "Versions of GHC are accurate"
+}
+else
+{
+    Write-Host "Versions of GHC not accurate"
+    exit 1
+}
+
+# Validation each of GHC version
+ForEach ($version in $GhcVersionList) {
+    $BinGhcPath = Join-Path $env:ChocolateyInstall "lib\ghc.$version\tools\ghc-$version\bin\ghc.exe"
+    if ((& $BinGhcPath --version) -match $version)
+    {
+        Write-Host "ghc $version is valid"
+    }
+    else
+    {
+        Write-Host "ghc $version is not valid"
+        exit 1
+    }
+}
+
+
+$GhcVersionsDescription = $GhcVersionList | ForEach-Object {
+    $DefaultPostfix = if ($DefaultGhcVersion -match $_) { " (default)" } else { "" }
+    "ghc $_ $DefaultPostfix `n"
+}
+
+$Description = @"
+_Version:_
+$GhcVersionsDescription<br/>
+"@
+
+Add-SoftwareDetailsToMarkdown -SoftwareName $SoftwareName -DescriptionMarkdown $Description
+
+
+# Cabal validation
+if (Get-Command -Name 'cabal')
+{
+    Write-Host "cabal is on the path"
+}
+else
+{
+    Write-Host "cabal is not on path."
+    exit 1
+}
+
+$SoftwareName = "cabal"
+
+$Description = @"
+_Version:_ $(cabal --version)<br/>
+"@
+
+Add-SoftwareDetailsToMarkdown -SoftwareName $SoftwareName -DescriptionMarkdown $Description