add oauth flows, profile, logout page, and index page

imports/api/OAuth/server/methods.js

@@ -0,0 +1,14 @@
+import { Meteor } from 'meteor/meteor';
+import { check } from 'meteor/check';
+import { ServiceConfiguration } from 'meteor/service-configuration';
+
+Meteor.methods({
+  'oauth.verifyConfiguration': function oauthVerifyConfiguration(services) {
+    check(services, Array);
+    const verifiedServices = [];
+    services.forEach((service) => {
+      if (ServiceConfiguration.configurations.findOne({ service })) verifiedServices.push(service);
+    });
+    return verifiedServices.sort();
+  },
+});