Show suggestions for search

[danirabbit]

Problem

There's currently no way to know that things like settings and actions can be searched without just trying it

Proposal

We should do a few things here to make search more learnable:

• [ ] By default, place focus somewhere else so you can see placeholder text
• [ ] Switch to the search view whenever the search entry is focused
• [ ] When the search entry is blank, show a placeholder that lists the types of things that can be searched (apps, settings, actions)

Prior Art (Optional)

Siri has a view where it lists a bunch of things you can search for with examples of the query in quotes, and clicking them executes that search: