Che-server PRs must include a ready-to-test container image #23724
Description
Is your task related to a problem? Please describe
It would be helpful to include information about the image built and published from the changes in the current PR, so reviewers can use it to test the changes during review.
As an example we can take the che-dashboard process: eclipse-che/che-dashboard#1368 (comment)
Describe the solution you'd like
Extend the existing GitHub Action to post a PR notification with details of the built image
Describe alternatives you've considered
No response
Additional context
No response