Like a TUI version of stuff like in the picture?
Basically a settings dialog with:
- all nvim options (in sections)
- a plugin section with
- installed plugins
- toggle
- configuration options
- available plugins
Looks like someone tried to do this and rightfully gave up on the neovim community: Formalize an extension specification: make configuring neovim as easy as vscode #14375
Pity. I'm not aware of another similar effort.