[Feature] 2FA implementation

[ZMJGMADHPXWT]

💡 Feature Description

There is no 2FA implementation and I can't connect to my servers, protected with 2FA.

🤔 Problem Statement

There are servers which use pam module for 2FA SSH auth. For example password+code from mobile app.
I provided an example, how it was configured. And now SysAdmin app can't connect to such server.
This ticket was checked, but that request is about key+password.

🛠️ Proposed Solution

To implement the possibility to login via password and then via one time code from app.

📊 Benefits

2FA is a well known technology, which gives you better security level.