[Bug] No backslash to ignore markdown in AppFlowy

Appflowy Editor is a markdown editor, we use commonly use markdown shortcuts like double underscores to make text italic, etc.
But right now there is no way to ignore the markdown syntax.
So if a user wants to surround something with two underscores and not make it italic and display it like _sometext_.
Then it is not possible.

Other markdown editors support the use of the backslash key () to ignore the markdown syntax.

Github link: [Bug] No backslash to ignore markdown in AppFlowy · Issue #3628 · AppFlowy-IO/AppFlowy · GitHub