Shortcuts for focusing tag editor #2132

Boostnote is the only notetaking app that can incorporate with Vim. It is such a good app.

However, As a programmer, I'd like to type instead of using a mouse. It would be nice to have a shortcuts for focusing tag editor. I assume the reason that we can't directly type #tag into the markdown content is we want to keep the editor only contains pure markdown text. I understand this. So, I am wondering if we can have a shortcut for focusing on the tag editor. When I finish writing notes, I can change to tag editor to add tags using ctrl+T instead of using a mouse. (as mentioned in #226)