Improve Podcasting 2.0 coverage

App version: 3.0.2

Problem you may be having, or feature you want:
A lot of other apps score higher on Podcastindex.org

Phase 1 (Closed on 11/15/20)

podcast:locked
podcast:transcript
podcast:funding
podcast:chapters
podcast:soundbite

Phase 2 (Closed on 1/31/21)

podcast:person
podcast:location
podcast:season
podcast:episode

Phase 3 (Closed on 6/1/21)

podcast:trailer
podcast:license
podcast:alternateEnclosure
podcast:source
podcast:integrity
podcast:guid

Phase 4 (Closed on 12/1/2021)

podcast:medium
podcast:images
podcast:liveItem

Phase 5 (Closed as of 7/15/2022)

podcast:socialInteract
podcast:block

Phase 6 (Closed as of 6/1/2023)

podcast:txt
podcast:remoteItem
podcast:podroll
podcast:updateFrequency
podcast:podping
podcast:valueTimeSplit

Suggested solution:
Implement more features of the Podcasting 2.0 standard as describe in GitHub - Podcastindex-org/podcast-namespace: A wholistic rss namespace for podcasting

Screenshots / Drawings / Technical details:
The Podcasting 2.0 standard offers a variety of features like better chapter marks, transcripts with timestamps, Alternate Enclousers,linking guests and various other improvements.
You don’t need to include the Cryptocurrency part of the Value 4 Value idea, but some of these are really useful

The following ones are irrelevant to AntennaPod: locked, guid, medium, images, block, txt, remoteItem, podping.