Feature: activate toggle on foldable titles

[Vincent-Maladiere]

Reference Issues/PRs Addresses #122

What does this implement/fix?

• Extend the toggle blocks selection to h1, h2, and h3 (namely header, sub_header, and sub_sub_header) via selenium to un-toggle them recursively.
• Extend the toggle blocks selection to the headers mentioned above via bs4 to set some custom loconotion ids.
• You can check the demo of this fix here: https://vincent-maladiere.github.io/4-statistics.html

Other comments Hey, @leoncvlt thanks for this great work! I added my blog to the list of projects using loconotion but feel free to remove it :)

[leoncvlt]

Thanks everyone!