what do you need? This is @Oscar Merry's proposal to use Nostr to send the metadata to Nostr and is the Nostr approach to fixing that and is laid out there. This has a nice overview of the PC 2.0 stuff

Podcasting 2.0 - Making podcasts better for everyone!

Learn about the podcast innovations and features of Podcasting 2.0 for audiences, podcasters, and developers; and how to upgrade your podcast for m...

RSS feeds are just a xml file you host somewhere and add to podcastindex.org so apps can find it.