start (actual) email auth, add CancellationToken to most async methods

Foxnouns.Backend/config.example.ini

@@ -41,6 +41,18 @@ AccessKey = <s3AccessKey>
 SecretKey = <s3SecretKey>
 Bucket = pronounscc
 
+[EmailAuth]
+; The address that emails will be sent from. If not set, email auth is disabled.
+From = noreply@accounts.pronouns.cc
+
+; The Coravel mail driver configuration. Keys should be self-explanatory.
+[Coravel.Mail]
+Driver = SMTP
+Host = localhost
+Port = 1025
+Username = smtp-username
+Password = smtp-password
+
 [DiscordAuth]
 ClientId = <clientIdHere>
 ClientSecret = <clientSecretHere>