feat!: convert projects to .net 5 wip

Habittodo.Model/TodoistSync.cs

@@ -0,0 +1,18 @@
+using Microsoft.Azure.Cosmos.Table;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Habittodo.Model
+{
+    public class TodoistSync : TableEntity
+    {
+        public TodoistSync() { }
+
+        public TodoistSync(string userId, string syncToken)
+        {
+            PartitionKey = userId;
+            RowKey = syncToken;
+        }
+    }
+}