added dotnet sample

dotnet-sample/iac/main.bicep

@@ -0,0 +1,35 @@
+param webAppName string = uniqueString(resourceGroup().id) // Generate unique String for web app name
+param sku string = 'S1' // The SKU of App Service Plan
+param location string = resourceGroup().location // Location for all resources
+param linuxFxVersion string = 'DOTNETCORE|6.0' // The runtime stack of web app
+
+var appServicePlanName = toLower('AppServicePlan-FeatureFlags')
+var webSiteName = toLower('wapp-${webAppName}')
+
+
+resource appServicePlan 'Microsoft.Web/serverfarms@2020-06-01' = {
+  name: appServicePlanName
+  location: location
+  sku: {
+    name: sku
+  }
+  kind: 'linux'
+  properties: {
+    reserved: true
+  }
+}
+
+resource appService 'Microsoft.Web/sites@2020-06-01' = {
+  name: webSiteName
+  location: location
+  kind: 'app'
+  properties: {
+    serverFarmId: appServicePlan.id
+    siteConfig: {
+      linuxFxVersion: linuxFxVersion
+
+    }
+  }
+}
+
+output webAppName string = appService.name