[DOCS]: Add version selector for products.

[phisco]

What type of issue is this?

Content is incorrect or unclear

Page URL (if applicable)

No response

Description

Not having a version selector in the docs makes them really hard to maintain, as we have to add notes "this works from vx.y on" all over the places. On top of that, we have no easy way to show version-specific configurations, such as helm chart values, resulting in us showing only the latest ones.

Additional context

No response

[linear]

CONTENT-32