FE - Change user data feature

[janmrakava]

When the BE is done, it's time to develop this feature on FE side. So right now is waiting for BE. Don't forget add some "toaster" notification when user succesfully change data.

[prikryla]

@janmrakava Route for edit user is ready to serve and test.

Name of the route - update_user
URL for testing - 127.0.0.1:8000/api/auth/update-user/
There should be either 'username' nor 'email' in requested data from FE. Change of the password will have separate route due some advanced reasons (handling the security etc)

Return response

    return JsonResponse({
        "message": "User profile updated successfully",
        "username": user.username,
        "email": user.email
    }, status=200)