Add ITunes RSS Support

[jj-style]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update
• Go Version Update
• Dependency Update

Description

Add Feed and Item structs with XML bindings for ITunes RSS tags so ITunes specific RSS tags can be generated for feeds.

Related Tickets & Documents

• Closes [FEATURE] iTunes RSS extensions support #108

Added/updated tests?

• Yes
• No, and this is why: please replace this line with details on why tests
  have not been included
• I need help with writing tests

Run verifications and test

• make verify is passing
• make test is passing

[jaitaiwan]

I'm cautious about adding vendor-specifics as it increases the amount of things the maintainer has to look after for future versions. I plan to come back around to this and determine: can these changes be kept as a superset of this library or do they need tight integrations like this?

[jaitaiwan]

I've had a chat with the other maintainers, and they agree that this feature, while super appreciated with all the tests etc, is something that can exist external to this repo and supplement the existing feature set without requiring us to maintain a spec for a different vendor. Thank you so much for your contribution and sorry we couldn't accept it. If you decide to put your work in its own repo let us know and we can link out to your project for those who are looking for itunes support.

[jj-style]

Thanks for your response yeah that makes sense good to keep this core library vendor agnostic and add those in around externally.

I am away at the moment but at some point will build something based off this / maintain a fork as I also wanted to include other tags for podcasting 2.0 and I agree I don't think here is the place for that!

Thanks again :)