Add PBandGraphOauth scaffold and auth UI

node_modules/@microsoft/microsoft-graph-client/lib/src/Constants.d.ts

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+/**
+ * -------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.
+ * See License in the project root for license information.
+ * -------------------------------------------------------------------------------------------
+ */
+/**
+ * @module Constants
+ */
+/**
+ * @constant
+ * A Default API endpoint version for a request
+ */
+export declare const GRAPH_API_VERSION = "v1.0";
+/**
+ * @constant
+ * A Default base url for a request
+ */
+export declare const GRAPH_BASE_URL = "https://graph.microsoft.com/";
+/**
+ * To hold list of the service root endpoints for Microsoft Graph and Graph Explorer for each national cloud.
+ * Set(iterable:Object) is not supported in Internet Explorer. The consumer is recommended to use a suitable polyfill.
+ */
+export declare const GRAPH_URLS: Set<string>;