Split endpoints for new notifications

cmd/root.go

constants/constants.go

go.mod

go.sum

notifications/apns/apns.go

notifications/ephemeral_test.go

notifications/firebase/fcm.go

notifications/firebase/fcm_test.go

notifications/notifications.go

notifications/notificationsLegacy.go

notifications/notificationsLegacy_test.go

notifications/notifications_test.go

notifications/notificationsv2.go

notifications/notificationsv2_test.go

notifications/params.go

notifications/providers/apns.go

notifications/providers/fcm.go

notifications/providers/provider.go

storage/database.go

storage/databaseImpl.go