Ground work for Wino Calendar. (#475)

Wino Calendar abstractions.

Wino.Core.ViewModels/Data/AccountProviderDetailViewModel.cs

@@ -0,0 +1,34 @@
+using System;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Wino.Core.Domain.Entities.Shared;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Mail.ViewModels.Data
+{
+    public partial class AccountProviderDetailViewModel : ObservableObject, IAccountProviderDetailViewModel
+    {
+
+        [ObservableProperty]
+        private MailAccount account;
+
+        public IProviderDetail ProviderDetail { get; set; }
+
+        public Guid StartupEntityId => Account.Id;
+
+        public string StartupEntityTitle => Account.Name;
+
+        public int Order => Account.Order;
+
+        public string StartupEntityAddresses => Account.Address;
+
+        public int HoldingAccountCount => 1;
+
+        public bool HasProfilePicture => !string.IsNullOrEmpty(Account.Base64ProfilePictureData);
+
+        public AccountProviderDetailViewModel(IProviderDetail providerDetail, MailAccount account)
+        {
+            ProviderDetail = providerDetail;
+            Account = account;
+        }
+    }
+}