Move code to core repository

Author: calebkiage

.gitmodules

@@ -1,3 +1,4 @@
 [submodule "msgraph-cli-core"]
 	path = msgraph-cli-core
 	url = https://github.com/microsoftgraph/msgraph-cli-core.git
+	branch = chore/refactor

msgraph-cli-core

@@ -1,9 +1,9 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Options;
-using Microsoft.Graph.Cli.Authentication;
+using Microsoft.Graph.Cli.Core.Authentication;
 using Microsoft.Graph.Cli.Configuration;
-using Microsoft.Graph.Cli.Utils;
+using Microsoft.Graph.Cli.Core.Utils;
 using System.CommandLine;
 using System.CommandLine.Invocation;
 

src/Authentication/AuthenticationServiceFactory.cs

@@ -1,5 +1,5 @@
-using Microsoft.Graph.Cli.Authentication;
-using Microsoft.Graph.Cli.Utils;
+using Microsoft.Graph.Cli.Core.Authentication;
+using Microsoft.Graph.Cli.Core.Utils;
 using System.CommandLine;
 using System.CommandLine.Invocation;