Added code fragment showing how to find a service using service-manager

snippets/service-manager-test.js

@@ -0,0 +1,54 @@
+/*
+Copyright 2022 Intel Corporation
+@author Bryan Roe
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+
+//
+// This code snippet walks thru verious aspects of using service-manager.js to interace with a service.
+// The service name used in these examples, are obtained from the command line. Pass it like the following:
+//
+// Windows =>       MeshService64 ..\snippets\service-manager-test.js "Mesh Agent"
+// Linux   =>       ./meshagent_x86_64 snippets/service-manager-test.js meshagent
+//
+//
+
+var serviceInstance = null;
+var servicename = process.argv[1]; // In this snippet, we are going to use the service name that is passed in from the command line
+
+console.log('Service Manager Test...');
+console.log('Finding service: ' + servicename);
+
+   
+try
+{
+    serviceInstance = require('service-manager').manager.getService(servicename); // This returns a service object for the named service, if it is found. Otherwise an exception is thrown.
+    //                                                ^^  
+    //                                                This is the singleton manager instance that can be used to do most of the work
+}
+catch(x)
+{
+    // If getService() throws an exception, it's becuase the specified service could not be found on the platform service manager
+    console.log('Unable to find service: ' + servicename);
+    process.exit();
+}
+
+
+console.log('Service Location: ' + serviceInstance.appLocation());                  // This is the where the service binary is located
+console.log('Service Working Path: ' + serviceInstance.appWorkingDirectory());      // This is the working path for the service
+console.log('Start Type: ' + serviceInstance.startType);                            // This is the start type. Usually AUTO_START or DEMAND_START
+console.log('Service Running: ' + serviceInstance.isRunning());
+
+process.exit();