Return Text Fragments for linking to highlights?

[karlhorky]

Hi @bvaughn, thanks for this package, very useful!

I wanted to see whether you'd be open to also returning a Text Fragment (blog post) in addition to the chunks matched in a string.

Eg.

1. Returning the Text Fragment Modules in Web for usage in the URL below, for matching and scrolling to that part of the page: https://blog.chromium.org/2019/12/chrome-80-content-indexing-es-modules.html#:~:text=Modules%20in%20Web
   
   
2. Returning the Text Fragment details%20about%20the-,API,-%2C%20see%20Experimenting%20with for usage in the URL below, for matching a specific instance of API in the page: https://blog.chromium.org/2019/12/chrome-80-content-indexing-es-modules.html#:~:text=details%20about%20the-,API,-%2C%20see%20Experimenting%20with

Ideas for implementation can be inspired by the doGenerateFragment function in fragment-generation-utils.js from the text-fragments-polyfill package:

https://github.com/GoogleChromeLabs/text-fragments-polyfill//blob/e5252cb6eba768cdc4166b27cbe8080fc67f37c7/src/fragment-generation-utils.js#L145-L243