#102: Moving Models and constants to their own library (#104)

* #102: Moving Models and constants to their own library

* #102: Updated sln file

* #102: Updated README to include step install migration tool

Icarus/Authorization/HasScopeRequirement.cs

@@ -0,0 +1,18 @@
+using System;
+
+using Microsoft.AspNetCore.Authorization;
+
+namespace Icarus.Authorization;
+
+public class HasScopeRequirement : IAuthorizationRequirement
+{
+    public string Issuer { get; }
+    public string Scope { get; }
+
+
+    public HasScopeRequirement(string scope, string issuer)
+    {
+        Scope = scope ?? throw new ArgumentNullException(nameof(scope));
+        Issuer = issuer ?? throw new ArgumentNullException(nameof(issuer));
+    }
+}