Add App Insights

Author: simonaco

GetRecipes/index.js

@@ -1,4 +1,9 @@
 const recipes = require('../shared/recipe.service');
+const appInsights = require('applicationinsights');
+appInsights.setup();
+const context = appInsights.defaultClient.context;
+context.tags[context.keys.cloudRole] = 'backend';
+appInsights.start();
 module.exports = async function(context, req) {
   context.log('JavaScript HTTP trigger function processed a request.');
   const SIZE = 10;