Tapas RSS Button

Tapas.io is a platform for publishing and reading webcomics and webnovels and, while it still provides RSS feeds for the series it hosts, there is no UI component to access these feeds.

This webextension restores such functionality, adding an 'RSS' button beside the existing 'Subscribe' buttons that allow for subscribing to a series inside the platform.

The only permissions requested by this extension are:
- Access to data in https://tapas.io pages, since it is needed to add code to create the RSS button and link it to the series RSS feed on the page.
- Storage access to save and restore configurations