* Blog post for Home Assistant release 8
* Add OS8 social image/move images to separate dir
* Small tweaks
* Apply suggestions from code review
* Add note that this is technical and people need not to worry about
* Update source/_posts/2022-05-16-home-assistant-os-release-8.markdown
Co-authored-by: Franck Nijhof <frenck@frenck.nl>