Adding PRT request via desktopsso

[Mauriceter]

Hello,

This is a small PR that add --krbtoken and --tenant to the PRT function to be able to query PRT using desktop SSO.

No changes were made to roadlib as everything is already implemented.

An example of use case:
The onprem domain is compromised, you got a managed device's keys, desktop sso is enable and you want to impersonate a user in entra id without its creds and CAP enforce MFA from unamanaged device.

With this you can:

1. craft a ticket with ticketer.py and convert it with krbsso.py
2. request a PRT for the user using the krbtoken and the device's keys
3. Access resource "from a managed device" with the PRT and bypass MFA

roadtx prt --cert-pfx device.pfx --pfx-pass password --krbtoken krbtokenblablabla -t tenant.com

(If there is a better way to do it in such situation I would gladly ear about it)