As per work done for #54001, we now have a telemetry.log file in the logs folder that tracks all telemetry events being logged in VS Code.

This file has been accessible using the Open Log File or Open Log Folder commands.

Since all the other "log" files also have a corresponding output channel, the telemetry.log file is an odd person out.

Also, due to recent refactoring, the file is no longer accessible via the Open Log File command in 1.28 insiders.

This issue is to have an output channel for the telemetry.log file to make it more inline with the other log files.

cc @sandy081