Synced from Eclipse Che issue

https://github.com/eclipse/che/issues/20552

Is your task related to a problem? Please describe

Current helmcharts [1] that are using to deploy Eclipse Che are deprecated
We have to replace them on ones to deploy che-operator.

[1] https://github.com/eclipse-che/che-server/tree/main/deploy

Describe the solution you'd like

• [x] remove --installer helm from chectl options
• [x] update doc not to mention helm anymore
• [x] Introduce helmcharts to deploy che-operator
• [x] publish the new chart to https://artifacthub.io/ and setup a gh action to automatically release a new version of the chart at every che release

Describe alternatives you've considered

No response

Additional context

https://github.com/eclipse/che/issues/20178

Release Notes Text

The old Helm chart has been replaced with a new one that reuse Che Kubernetes operator to deploy Che. The new Chart has been published on ArtifactHub. We have removed the helm chart installer in chectl: to install the new Chart users are required to use helm command line tool.