implement sending of notifications on events

internal/db/dbrepo/mytokenrepo/mytoken.go

...b/dbrepo/mytokenrepo/transfercoderepo/pollingCodeTmpMT.go

internal/db/notificationsrepo/notifications.go

internal/endpoints/actions/actions.go

internal/endpoints/actions/pkg/actions.go

internal/endpoints/notification/calendar/calendar.go

internal/endpoints/revocation/revocationEndpoint.go

internal/endpoints/settings/email/email.go

internal/endpoints/settings/settings.go

internal/endpoints/token/access/accessTokenEndpoint.go

internal/endpoints/tokeninfo/history.go

internal/endpoints/tokeninfo/introspect.go

internal/endpoints/tokeninfo/list.go

internal/endpoints/tokeninfo/subtokens.go

internal/mytoken/event/event.go

internal/mytoken/event/pkg/mtevent.go

internal/mytoken/mytokenHandler.go

internal/mytoken/pkg/mytoken.go

internal/mytoken/rotation/rotation.go

internal/notifier/client/notifier_client.go