Document how to export a file of logs from Events Viewer on Windows

[jasikpark]

When running nebula on Windows, we pass logs into Events Viewer, which is easy to implement and offers log-rotation, but it'd be great to be able to export to logs.txt somewhere.

[jasikpark]

https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/tee-object?view=powershell-7.5

https://definednetworking.slack.com/archives/C0254UH0ZE1/p1739226579698509?thread_ts=1739226267.862529&cid=C0254UH0ZE1

https://definednetworking.slack.com/archives/D01UD5H9A7K/p1742411246361339