Add autolinking to PEPs

[TheTripleV (Vasista Vovveti)]

I’d like to request autolinking to PEPs in posts be added to this Discourse.

I clicked on A fast, free threading Python and would have loved a PEP link instead of having to google it.

It seems straightforward based on the limited research I did in

[META] Consider: Consolidate all Typing PEPs into a separate numbering system

I think using a Discourse theme component (Linkify words in post - theme-component - Discourse Meta) with a linked word entry /pep(?: |-)?([0-9]+)/i, https://peps.python.org/pep-$1 would work. For example, It should match PEP 434, pep 457, PEP-558, pep596