Real time responses. Settings page. Loading statuses. Errors

In this version of the app, the following updates have been added:

1. The ability to edit your profile has been introduced:

• Add a photo;
• Update first and last name;
• Update password.

2. The response from the NLP model is displayed in real-time.

3. Data loading statuses have been added for all pages.

4. Error messages have been added to forms.