Device plugin management (2/n): enable/disable, install/uninstall

Summary:
*Stack summary*: this stack adds ability to manage device plugins in the same way as client plugins: install, update, uninstall, enable (star) and disable (unstar) them.

*Diff summary*: implemented all plugin management actions for device plugins.

Changelog: it is now possible to enable/disable and install/uninstall device plugins

Reviewed By: mweststrate

Differential Revision: D26337377

fbshipit-source-id: 7d1ed61a8dc5f3339e5e548c613b67bca0c27f4f

desktop/app/src/__tests__/PluginContainer.node.tsx

@@ -961,7 +961,8 @@ test('Sandy plugins support isPluginSupported + selectPlugin', async () => {
   expect(pluginInstance.deactivatedStub).toBeCalledTimes(0);
   expect(linksSeen).toEqual([]);
 
-  // open a device plugin
+  // star and navigate to a device plugin
+  store.dispatch(starPlugin({plugin: definition3}));
   pluginInstance.selectPlugin(definition3.id);
   expect(store.getState().connections.selectedPlugin).toBe(definition3.id);
   expect(renderer.baseElement.querySelector('h1')).toMatchInlineSnapshot(`