Ground work for Wino Calendar. (#475)

Wino Calendar abstractions.

Wino.Core/Authenticators/Calendar/OutlookAuthenticator.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Threading.Tasks;
+using Wino.Core.Authenticators.Base;
+using Wino.Core.Domain.Entities.Shared;
+using Wino.Core.Domain.Enums;
+using Wino.Core.Services;
+
+namespace Wino.Core.Authenticators.Calendar
+{
+    public class OutlookAuthenticator : OutlookAuthenticatorBase
+    {
+        public OutlookAuthenticator(ITokenService tokenService) : base(tokenService)
+        {
+        }
+
+        public override string ClientId => throw new NotImplementedException();
+
+        public override MailProviderType ProviderType => MailProviderType.Outlook;
+
+        public override Task<TokenInformation> GenerateTokenAsync(MailAccount account, bool saveToken)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override Task<TokenInformation> GetTokenAsync(MailAccount account)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}