organize event models. stub out event services

src/Core/Models/Data/UserEvent.cs

@@ -0,0 +1,30 @@
+using System;
+using Bit.Core.Enums;
+using Bit.Core.Utilities;
+
+namespace Bit.Core.Models.Data
+{
+    public class UserEvent : EventTableEntity
+    {
+        public UserEvent(Guid userId, EventType type)
+        {
+            PartitionKey = $"UserId={userId}";
+            RowKey = string.Format("Date={0}__Type={1}",
+                CoreHelpers.DateTimeToTableStorageKey(), type);
+
+            UserId = userId;
+            Type = type;
+        }
+
+        public UserEvent(Guid userId, Guid organizationId, EventType type)
+        {
+            PartitionKey = $"OrganizationId={organizationId}";
+            RowKey = string.Format("Date={0}__UserId={1}__Type={2}",
+                CoreHelpers.DateTimeToTableStorageKey(), userId, type);
+
+            OrganizationId = organizationId;
+            UserId = userId;
+            Type = type;
+        }
+    }
+}