Add a script to count generated cmdlets (Azure#15987)

tools/cmdletcount.ps1

@@ -0,0 +1,28 @@
+# Usage
+# ./cmdletcount.ps1 -path ../src/
+
+param([string]$path = './')
+
+$moduleList = @('ADDomainServices', 'Aks/Aks.Autorest', 'AppConfiguration','Blockchain','BotService','ChangeAnalysis','CloudService','Communication','Confluent','ConnectedKubernetes','ConnectedMachine','ContainerInstance','CostManagement','CustomProviders', 'DataBox', 'Databricks','Datadog','DataProtection','DedicatedHsm','DesktopVirtualization','DigitalTwins','DiskPool','DnsResolver','Elastic','Functions','HanaOnAzure','HealthBot','ImageBuilder','ImportExport','KubernetesConfiguration','Kusto','Maps','MariaDb','Migrate','MonitoringSolutions','MySql','Portal','PostgreSql','ProviderHub','Purview','RedisEnterpriseCache','ResourceGraph/ResourceGraph.Autorest','ResourceMover','SpringCloud','StreamAnalytics','Synapse/Synapse.Autorest','TimeSeriesInsights','VMware','Websites/Websites.Autorest','WindowsIotServices')
+
+$resultFile = './result.csv'
+
+$result = @()
+
+foreach ($module in $moduleList) {
+    $modulePath = Join-Path (Join-Path $path $module) docs
+    $customPath = Join-Path (Join-Path $path $module) custom
+    $module = $module.Split('/')[0]
+    $cmdlets = Get-ChildItem $modulePath -Exclude readme.md, "Az.$module.md", "$module.md" | foreach {$_.name.Split(".")[0]}
+    foreach ($cmdlet in $cmdlets) {
+        $isCustom = Get-ChildItem $customPath -Include "$cmdlet.ps1" -Recurse
+        $genMode = "Autogen"
+        if ($isCustom) {
+            $genMode = "Custom"
+        }
+        $item = @{Module = "Az.$module"; Cmdlet = "$cmdlet"; GenMode = "$genMode"}
+        $result += [pscustomobject]$item
+    }
+}
+
+$result | ConvertTo-Csv | Out-File -Path $resultFile