feat(Markdown Node): Add new node to covert between Markdown <> HTML (#…

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* ✨ Markdown Node

* Tweaked wording

* ⬆️ Bump showdown to latest version

* ⚡ Small improvement

* 👕 Fix linting issue

* ⚡ Small improvements

* 🔨 added options, added continue on fail, some clean up

* ⚡ removed test code

* ⚡ added missing semicolumn

* 🔨 wip

* 🔨 replaced library for converting html to markdown, added options

* ⚡ lock file fix

* 🔨 clean up

Co-authored-by: sirdavidoff <1670123+sirdavidoff@users.noreply.github.com>
Co-authored-by: Michael Kret <michael.k@radency.com>