PlatformIO’s ‘PIO Home’ screen does have an option for the built-in examples provided with the projects - i.e. the top part of that list
You then get a drop-down list of all the example projects, ordered by platform they are from.
However, the isn’t anything as yet for libraries. Hence why it’s on Manuel’s Christmas wishlist 
Nearest option at present is to open the library in the Library Registry (or the PlatformIO Home libraries view), and copy and paste one of the examples with the library you are interested into into a new project.