Add a dynamic floating Table of Contents next to the note #2502

I know we just got an automatic table of content feature that includes a toc at the curser position. This is quite static however, can we also add a dynamic floating Table of Contents next to the note like in the following example?

https://tscanlin.github.io/tocbot/#requirements

It's already an npm module, but I don't know how to integrate it into Boostnote.

For those who don't want a floating table of content next to their note, we could add a toggle switch just like we already have for the edit and preview modes.

I'm willing to contribute money to a bounty on Issuehunt.