Logs should be in the output panel

[isidorn]

Refs: #39572

Logs are read only and thus shuold be in the output panel imho
They could have a channel (or multiple) of their own which could be shown in the output dropdown.

[isidorn]

Another issue with the current approach is having to manage editors. Here's what just happened to me: i was inspecting logs, and left the log editor open. I restart vscode with a different log flag to only show errors, vscode opens and I still see the old logs (due to the editor being persisted). Only after I while I figured I need to re-fatch my logs and the shown state is stale

As a simple workaround for this we should close all log editors when a log level changes

[joaomoreno]

I actually like it better if we put them into the Output pane. 👍

Also fixes #39644