(GH-2203) Get-ChocolateyUnzip add unzipLocation alias

Install-ChocolateyZipPackage already has a Destination alias to
UnzipLocation. This adds the inverse case, so Get-ChocolateyUnzip has
an alias UnzipLocation to the Destination parameter. The reason for
adding this is to reduce frustration from adding the wrong parameter
name, and then having to fix it.

src/chocolatey.resources/helpers/functions/Get-ChocolateyUnzip.ps1

@@ -88,7 +88,7 @@ Install-ChocolateyZipPackage
 #>
 param(
   [alias("file")][parameter(Mandatory=$false, Position=0)][string] $fileFullPath,
-  [parameter(Mandatory=$true, Position=1)][string] $destination,
+  [alias("unzipLocation")][parameter(Mandatory=$true, Position=1)][string] $destination,
   [parameter(Mandatory=$false, Position=2)][string] $specificFolder,
   [parameter(Mandatory=$false, Position=3)][string] $packageName,
   [alias("file64")][parameter(Mandatory=$false)][string] $fileFullPath64,