Added IsAuthorized overloads for flexibility

Auth.cs

@@ -21,6 +21,10 @@ public static class Auth
     {
         return TryGetUser(context, out SafeUser user) && user.Level <= requiredLevel;
     }
+    internal static bool IsAuthorized(HttpContext context, string Username)
+    {
+        return TryGetUser(context, out SafeUser user) && user.Username == Username;
+    }
 
     internal static Task RejectUnauthorized(HttpContext context)
     {