This commits adds some shortcut definitions for the angular.io PWA. The
user agent can use them to assemble a context menu to be displayed by
the operating system when a user engages with the app's icon. (In
addition, shortcuts provide an easy way for users to add links to
specific pages on their home screen.)
See [here][1] for more details on the `shortcuts` property of the PWA
manifest.
The choice of pages to create shortcuts to was influenced by the
following facts/criteria:
- It seems that only the first 4 shortcuts are displayed by Chrome (at
least on my Android phone).
- Since the PWA is mostly used on mobile, I omitted pages that are less
likely to be useful for mobile users (such as pages related to CLI).
[1]: https://developer.mozilla.org/en-US/docs/Web/Manifest/shortcuts
PR Close#40393
96690ed3a4