Integrate thank you notification per email as cron job

[hugotiburtino]

An starter code is to be found in branch thankyou-cronjob (the the script is missing since it has still secrets and should not be commited until we use vars and update the bucket) .

• [ ] In infrastructure-env-staging open a new module with the namespace notifications (this namespace will be useful for future feats)
• [ ] In order to use images it is much simpler just to containerize the app than using other alternatives as storage claim or whatever. Please use infrastructure-images for it. In the future we could integrate the script in notification-mail-service either as part of its job or as another package.
• [ ] Use env vars for the config
• [ ] update bucket secrets (@hugotiburtino)

[hugotiburtino]

It seems we won't implement it, is it?

[Entkenntnis]

no, this is not necessary anymore