Hamburger button menu is now a User Control

WIP History in Entry page

ModernKeePass/ViewModels/HistoryVm.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using ModernKeePass.Interfaces;
+
+namespace ModernKeePass.ViewModels
+{
+    public class HistoryVm: IHasSelectableObject
+    {
+        public IEnumerable<IPwEntity> History { get; }
+
+        public HistoryVm() { }
+
+        public HistoryVm(IEnumerable<IPwEntity> history)
+        {
+            History = history;
+        }
+
+        public ISelectableModel SelectedItem { get; set; }
+    }
+}