Summary:
Introduced API to replace the deprecated `selectPlugin` in Sandy.
The API can be used to navigate from `device plugin -> device plugin`, or` client plugin -> device / client plugin`
Introduced `isPluginAvailable` as well, so that the user interaction an be fine tuned in case the plugin is not disabled.
Reviewed By: jknoxville
Differential Revision: D25422370
fbshipit-source-id: c6c603f1c68e6291280b3d0883e474448754ded1
52862f6083