Feature: Microsoft type session proxy

[Redo11]

Allow users to use standard launchers and proxies, by using Mjolnir as Yggdrasil front end for Microsoft OAuth type login.

Basically, recently I switched from cracked version, to legit, but account I got is connected with Microsoft. Using something, that allows me to use my old launchers, would be very useful and could allow Yggdrasil type launchers to live at least to the point, when Microsoft accounts are fully enforced.