feat: add ability to use self-signed certs for email #378
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With argoproj/argo-cd#15394 it has been possible to use custom certs from
argocd-tls-certs-cm. This works as intended for any notification that is based on HTTP, but not for emails (since the email doesn't make use ofhttp.Transport).This commit fixes that by extracting out the TLS config to a separate function which can be called by the email service. The functionality which creates an email has been extracted from the library which was previously used since there's no support for setting custom TLS configs.
This also means we can get rid of the
gomodules.xyz/notifylibrary.