Version-specific documentation

[Andersson007]

Hello,

The community is developing an Ansible collection for ClickHouse and often struggles with the docs having no versions.

There was a similar issue reported in https://github.com/ClickHouse/clickhouse-docs/issues/2125 but i would suggest not mentioning the version (it'd also work and better than nothing) but creating version-specific docs, in other words, be able to choose a version of ClickHouse similar like in PostgreSQL

It could be based on building docs from corresponding branches matching clickhouse versions.

Would make user life way easier.