automatic email

src/emailnotification/main.go

src/emailnotification/model/emailContent.go

src/emailnotification/service/email.go

src/highlanderticketing/config/oauthconf.go

src/highlanderticketing/handler/oauth.go

src/highlanderticketing/main.go

src/highlanderticketing/model/emailContent.go

src/highlanderticketing/service/nats.go

src/highlanderticketing/service/user.go