A way to know from the documentation when a given class was introduced

[melMass]

Is your feature request related to a problem? Please describe. While working with various codebase that rely on different diffuser versions I find it challenging to pinpoint when a given sheduler/ base model was introduced. For now I basically manually increment the version in the URL at a given doc page -> ctrl + F and repeat until I find it.

Describe the solution you'd like. Add a notice next to classes in the doc reference pages like introduced in 0.24

Describe alternatives you've considered. A single dedicated page with a big filterable table providing this kind of data