Add TUI with textual

[RhetTbull]

I have this prototyped using markdownify to render the HTML notes to Markdown and Textual to display a TUI.

I'd love to have a full Notes UI in the Terminal but I'm not sure it'll be fast enough due to how slow the AppleScript bridge is. It will definitely be usable for browsing a subset of notes. I'm thinking something like this:

notes view [search term] opens a TUI listing just the matching notes.