Add Windows post module for reading/searching Outlook e-mail

This module allows to read and search e-mails present in Outlook installations. It is using powershell in order to search the e-mails.

When connecting to Outlook using powershell, a security popup appears. WinAPI is used to automatically click on the popup, so access is allowed.

This module is tested on Windows 8.1 x64 with Outlook 2013.
I modified this script to list all folders (including subfolders) from all mailboxes instead of only the first one:

```
function GetSubfolders($root) {
    $folders = @()
    $folders += $root
    foreach ($folder in $root.Folders) {
        $folders += GetSubfolders($folder)
    }
    return $folders
}

function List-Folder {
    Clear-host
    Add-Type -Assembly "Microsoft.Office.Interop.Outlook"
    $Outlook = New-Object -ComObject Outlook.Application
    $Namespace = $Outlook.GetNameSpace("MAPI")
    $account = $NameSpace.Folders
    $folders = @()
    foreach ($acc in $account) {
        foreach ($folder in $acc.Folders) {
            $folders += GetSubfolders($folder)
        }
    }
    $folders | FT FolderPath
}

List-Folder
```

Can you verify this? The other script also needs some rework to search over all mailboxes instead of only the first one