[feature request] yurtadm join supports installation of yurthub as system service

[YTGhost]

What would you like to be added:
Make yurthub run as a system service, just like kubelet.

Why is this needed:
This allows yurthub to be launched relatively independently and reduces dependencies with kubelet

others
/kind feature

[luc99hen]

/assign @luc99hen

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[rambohe-ch]

@luc99hen Do you have any progress about this issue?

[luc99hen]

I am sorry that currently this task has not been started. I have been busy with other stuff at this moment. If necessary, maybe we can find someone else for this task? @rambohe-ch

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.