Add Blazor WebApp and rework data handling to utilize Entity Framework

WebApp/Models/SharedSortableListGroup.cs

@@ -0,0 +1,16 @@
+using BlazorSortableList;
+using Core.Entities;
+
+namespace WebApp.Models;
+
+/// <summary>
+/// Class SharedSortableListGroup.
+/// Used for BlazorSortableList
+/// </summary>
+internal class SharedSortableListGroup : MultiSortableListGroup<EventDefinition>
+{
+    public SharedSortableListGroup(Action refreshComponent)
+        : base(refreshComponent)
+    {
+    }
+}