Add command to get pertinent version info.

Author: rkeithhill

module/PowerShellEditorServices/PowerShellEditorServices.psd1

@@ -66,7 +66,7 @@ Copyright = '(c) 2016 Microsoft. All rights reserved.'
 # NestedModules = @()
 
 # Functions to export from this module, for best performance, do not use wildcards and do not delete the entry, use an empty array if there are no functions to export.
-FunctionsToExport = @('Start-EditorServicesHost')
+FunctionsToExport = @('Start-EditorServicesHost', 'Get-PowerShellEditorServicesVersion')
 
 # Cmdlets to export from this module, for best performance, do not use wildcards and do not delete the entry, use an empty array if there are no cmdlets to export.
 CmdletsToExport = @()

module/PowerShellEditorServices/PowerShellEditorServices.psm1

@@ -94,4 +94,33 @@ function Start-EditorServicesHost {
     }
 
     return $editorServicesHost
-}
+}
+
+function Get-PowerShellEditorServicesVersion {
+    $nl = [System.Environment]::NewLine
+
+    $versionInfo = "PSVersionTable:`n$($PSVersionTable | Out-String)" -replace '\n$', ''
+
+    if ($IsLinux) {
+        $versionInfo += "Linux version: $(lsb_release -d)$nl"
+    }
+    elseif ($IsOSX) {
+        $versionInfo += "macOS version: $(lsb_release -d)$nl"
+    }
+    else {
+        $versionInfo += "Windows version: $(Get-CimInstance Win32_OperatingSystem | Foreach-Object Version)$nl"
+    }
+
+    $versionInfo += $nl
+
+    $OFS = ", "
+    $versionInfo += "VSCode version: $(code -v)$nl"
+    $OFS = "$nl    "
+    $versionInfo += "VSCode extensions:$nl    $(code --list-extensions --show-versions)"
+
+    if (!$IsLinux -and !$IsOSX) {
+        $versionInfo | Microsoft.PowerShell.Management\Set-Clipboard
+    }
+
+    $versionInfo
+}