Please add Markdown support

Please add support for Markdown editing/rendering. EverNote and Boostnote all support this, but OneNote still lacks this feature, while it remains so many developers' main notetaking tool. Take myself as an example, I enjoy its seamless integration with OneDrive and powerful search function, but find it difficult to properly take down coding related notes -- I was forced to format code snippets into monospaced font with shading to make them look like "code snippets".

To elaborate the user story about this idea:

1. The user can create a new "regular page" or a "Markdown page". If the latter, then Markdown tags entered are rendered as you type (e.g. #title, >quote, *bold*, `code`...)
2. The user might also enjoy a "cell editing" mode (similar to Jupyter Notebook). So if the cursor is placed in a cell, then it changes to raw text view. And once escaped from this cell, it gets rendered. And maybe enable some Jupyter/VS Code stype shortcut keys, too (Alt+Up/Down to move the cell, Alt+Shift+Up/Down to duplicate the cell, Ctrl+Shift+K to kill a line, etc)

This way notetaking will be more efficient/fun, and many developers would thank MS!