Added EF and DB to the core, crude demo in the UI

WinWARP.Core/Models/Entities/Server.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+
+namespace WinWARP.Core.Models.Entities;
+
+public class Server
+{
+    [Key]
+    public int Id
+    {
+        get; set;
+    }
+
+
+    public int SubscriptionId
+    {
+        get; set;
+    }
+
+}