[Feature Request]support install and upgrade by native in air-gapped environmemt

[codering]

Describe the solution you'd like

We can agree on a directory to store the k3s offline installation package and version, and then we can choose to install or upgrade through ui or cli

[orangedeng]

The design docs is available here: https://github.com/cnrancher/autok3s/discussions/480. Any comments or discussion are very welcome.

[sniperking1234]

Is there a release plan for version v0.6?

[Jason-ZW]

@sniperking1234 You can follow the 0.6.0 milestone progress, which will be released once we complete the issues in the milestone.

[ly5156]

1. Air gap package list page
2. View/Update Install Package
3. Create air gap package
4. import air gap package
5. Edit Air gap package

[ly5156]

1. 创建集群支持 air-gap package install

2. 更新集群支持 air-gap package upgrade