[web] Move EnumSettingsOption[Info] components to /components
Summary:
Can move these to components since they're now "generic" and can be used elsewhere (eg for the ThreadSettingsPrivacyTab)
Depends on D4048
Test Plan:
- Open NotificationsModal
- Make sure everything still looks/works as expected
Reviewers: def-au1t, palys-swm, benschac
Reviewed By: palys-swm
Subscribers: ashoat, Adrian, yayabosh
Differential Revision: https://phabricator.ashoat.com/D4049