Reorganized file structure and namespaces

dotnet/AipsCore/Infrastructure/Persistence/RefreshToken/RefreshTokenException.cs

@@ -0,0 +1,16 @@
+namespace AipsCore.Infrastructure.Persistence.RefreshToken;
+
+public class RefreshTokenException : Exception
+{
+    private const string InvalidTokenMessage = "Invalud token";
+    private const string TokenExpiredMessage = "Token expired";
+    
+    public RefreshTokenException(string message)
+        : base(message)
+    {
+        
+    }
+    
+    public static RefreshTokenException InvalidToken() => new(InvalidTokenMessage);
+    public static RefreshTokenException TokenExpired() => new(TokenExpiredMessage);
+}