Add initial hcs database schema creation

Hcs.WebApp/Data/Identity/AppRole.cs

@@ -0,0 +1,13 @@
+using Microsoft.AspNetCore.Identity;
+
+namespace Hcs.WebApp.Data.Identity
+{
+    public class AppRole : IdentityRole
+    {
+        public const string ADMINISTRATOR_TYPE = "Administrator";
+        public const string OPERATOR_TYPE = "Operator";
+        public const string OBSERVER_TYPE = "Observer";
+
+        public int Priority { get; set; }
+    }
+}