Update support for Windows Terminal (and conhost)

[WSLUser]

As of recently, any VT sequence will get passed through to conhost regardless if fully supported or not. On the other hand, Sixel is now fully implemented in both WT and conhost. There are other VT sequences which are explicitly enabled for some terminals but not for Windows even though conhost and/or WT do support them. See microsoft/terminal#17421 and microsoft/terminal#17510.

[codr1]

Is this why I have been failing at life trying to get anything going on WT?
I am very new here and trying to scale that steep learning curve, so it could be a skill issue on my end...