Lookup feed by parsing HTML <link> tag

1. Environment

• Device: [Pixel 6]
• OS: [Android 15]
• APP: [0.11.1]

2. Describe the feature request

Back in the hey day of blogging (circa 2009) when RSS use was booming 🥳 many RSS readers (mostly desktop at the time) allowed for the UX of pasting a normal website URL into the "Subcribe" dialog field such as:

https://dcurt.is

The RSS reader app would then automatically ✨ parse the HTML of the URL entered and extract the feed URL, such as:

<link rel="alternate" type="application/rss+xml" href="https://dcurt.is/feed" />

And then proceed to add this feed to the app. Currently, most FOSS mobile RSS readers (including ReadYou) do not do this. Instead they display an error.

I miss this old UX of feed readers from 15 years ago... 😿

Due to the specification allowing for multiple feeds (for multiple feeds or languages) it is worth taking this into account and offering a second dialogue choosing which feed to subscribe to:

• https://stackoverflow.com/questions/33421401/meta-tags-and-rss-for-multi-lingual-website

Hopefully the nice contributors to ReadYou agree with me on this feature 💮

No source file or test is named. Start by tracing the Subscribe dialog and the handling of a submitted website URL, then inspect how feed discovery errors are reported. Done means parsing HTML link tags, handling multiple matching feeds through a choice dialog, and subscribing to the selected feed.