Add chart stats for ps gallery module

Examples/Extra/Get-ModuleStats.ps1

@@ -0,0 +1,13 @@
+param(
+    [Parameter(Mandatory=$true)]
+    $moduleName,
+    [ValidateSet('Column','Bar','Line','Pie')]
+    $chartType="Line"    
+)
+
+$galleryUrl = "https://www.powershellgallery.com/packages/$moduleName"
+$nolegend = '-nolegend'
+if($chartType -eq 'pie') {$nolegend = $null}
+$code = "$($chartType)Chart (Get-HtmlTable $galleryUrl 0) -title 'Download stats for $moduleName' $nolegend"
+
+$code | Invoke-Expression