refactor: transfer logic

All logic related to token manipulation has been transferred to the AuthService. Also added TOTP 2FA and rethought the logic of logging into the application

ApiDto/Responses/AuthenticationStep.cs

@@ -0,0 +1,17 @@
+namespace Mirea.Api.Dto.Responses;
+
+/// <summary>
+/// Represents the steps required after a login attempt.
+/// </summary>
+public enum AuthenticationStep
+{
+    /// <summary>
+    /// No additional steps required; the user is successfully logged in.
+    /// </summary>
+    None,
+
+    /// <summary>
+    /// TOTP (Time-based One-Time Password) is required for additional verification.
+    /// </summary>
+    TotpRequired,
+}