add notifications to the app permissions

[johnsmith-gooddollar]

• [x] configure native apps (plist and manifest) to be allowed to ask local notifications perms
• [x] add Notifications permissions to the src/components/permissions/api/PermissionsAPI.web.js class
• [x] on the web always return 'denied' for notifications (status check), do nothing on request
• [x] update usePermissions() hook

ONHOLD:

• [ ] add notifications to the platform permissions
• [ ] add fallback _requestNotificationsPermissions method to be called if browser doesn't supports Permissions API. how to do it see here: https://github.com/GoodDollar/desktop-notifications-sw-test/blob/master/src/useNotifications.js