Set Link to Home Screen for notebook and searches

[NiceFeather]

• [x] I have searched for existing issues that may be the same as or related to mine.

This would be a good idea that creating shortcut to home screen for every Notebook from the inner of app, to add a menu item like 'Set Link to Home Screen' on top-right of Notebook list and notebook view, it'll be an extension for shortcuts feature.

Again the Searches view is very similar to notebooks. All this is a suggestion.

[yaomtc]

Alternately, I'd like an option to open the Default Notebook when Orgzly is launched. Right now it shows me the overview, requiring an extra tap to get to the only notebook I use. Not a big deal, but would be nice to have a way to get straight to a notebook from the home screen.