New Contributor Orientation Article

[kaslin]

New Contributor Orientation blog to be turned into a web page on k8s.dev

Use the full content (not split), and add a comment at the beginning "Have questions? Join live!" linking to the NCO page or github or something.

[kaslin]

/assign @TineoC
/assign @Hii-Arpit

Decide if we want to post this as a blog, put it in the repo, etc.