[BUG] ">_ Launch Kubectl" does not work on windows

[doublefx]

Describe the bug
">_ Launch Kubectl" does not work on windows:
level=error msg="Unknown error: not support windows"

To reproduce
Steps to reproduce the behavior:

1. In your path, download the latest autok3s for windows 64 and rename it: autok3s

2. Create a cluster.

3. In the UI, go to http://localhost:8080/ui/cluster-explorer/core/clusters, click on ">_ Launch Kubectl", select your cluster and get:
   level=error msg="Unknown error: not support windows"

OS: Windows 11
AutoK3s Version: v0.6.0

[Jason-ZW]

@doublefx This is a known issue as autok3s uses creack/pty to establish pty connections and currently cannot support windows environment.

[Jason-ZW]

Maybe we can support Windows through conpty.